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RFC 3805 - Printer MIB v2


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RFC3805 - Printer MIB v2


Network Working Group                                         R. Bergman
Request for Comments: 3805                    Hitachi Printing Solutions
Obsoletes: 1759                                                 H. Lewis
Category: Standards Track                                IBM Corporation
                                                             I. McDonald
                                                         High North Inc.
                                                               June 2004

                             Printer MIB v2

Status of this Memo

   This document specifies an Internet standards track protocol for the
   Internet community, and requests discussion and suggestions for
   improvements.  Please refer to the current edition of the "Internet
   Official Protocol Standards" (STD 1) for the standardization state
   and status of this protocol.  Distribution of this memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (2004).

Abstract

   This document provides definitions of models and manageable objects
   for printing environments.  The objects included in this MIB apply to
   physical, as well as logical entities within a printing device.  This
   document obsoletes RFC 1759.

Table of Contents

   1.  Introduction. . . . . . . . . . . . . . . . . . . . . . . . .   4
       1.1.  Network Printing Environment. . . . . . . . . . . . . .   4
       1.2.  Printer Device Overview . . . . . . . . . . . . . . . .   6
       1.3.  Categories of Printer Information . . . . . . . . . . .   6
             1.3.1.  Descriptions. . . . . . . . . . . . . . . . . .   6
             1.3.2.  Status. . . . . . . . . . . . . . . . . . . . .   6
             1.3.3.  Alerts. . . . . . . . . . . . . . . . . . . . .   6
       1.4.  The Internet-Standard Management Framework. . . . . . .   7
       1.5.  Requirement Levels. . . . . . . . . . . . . . . . . . .   7
   2.  Printer Model . . . . . . . . . . . . . . . . . . . . . . . .   8
       2.1.  Overview of the Printer Model . . . . . . . . . . . . .  10
       2.2.  Printer Sub-Units . . . . . . . . . . . . . . . . . . .  10
             2.2.1.  General Printer . . . . . . . . . . . . . . . .  10
                     2.2.1.1.  International Considerations. . . . .  10
             2.2.2.  Inputs. . . . . . . . . . . . . . . . . . . . .  11
             2.2.3.  Media . . . . . . . . . . . . . . . . . . . . .  12
             2.2.4.  Outputs . . . . . . . . . . . . . . . . . . . .  12
             2.2.5.  Finishers . . . . . . . . . . . . . . . . . . .  12
             2.2.6.  Markers . . . . . . . . . . . . . . . . . . . .  13
             2.2.7.  Media Paths . . . . . . . . . . . . . . . . . .  13
             2.2.8.  System Controller . . . . . . . . . . . . . . .  14
             2.2.9.  Interfaces. . . . . . . . . . . . . . . . . . .  14
             2.2.10. Print Job Delivery Channels . . . . . . . . . .  14
             2.2.11. Interpreters. . . . . . . . . . . . . . . . . .  15
             2.2.12. Console . . . . . . . . . . . . . . . . . . . .  15
             2.2.13. Alerts. . . . . . . . . . . . . . . . . . . . .  15
                     2.2.13.1. Status and Alerts . . . . . . . . . .  16
                     2.2.13.2. Overall Printer Status. . . . . . . .  16
                               2.2.13.2.1. Host Resources MIB
                                           Printer Status. . . . . .  18
                               2.2.13.2.2. Sub-unit Status . . . . .  20
                     2.2.13.3. Alert Tables. . . . . . . . . . . . .  21
                     2.2.13.4. Alert Table Management. . . . . . . .  21
       2.3.  Read-Write Objects. . . . . . . . . . . . . . . . . . .  23
       2.4.  Enumerations. . . . . . . . . . . . . . . . . . . . . .  24
             2.4.1.  Registering Additional Enumerated Values. . . .  25
   3.  Groups from other MIB Specifications. . . . . . . . . . . . .  25
       3.1.  System Group. . . . . . . . . . . . . . . . . . . . . .  25
       3.2.  System Controller . . . . . . . . . . . . . . . . . . .  25
       3.3.  Interface Group objects . . . . . . . . . . . . . . . .  26
             3.3.1.  Interface Types . . . . . . . . . . . . . . . .  26
   4.  Differences from RFC 1759 . . . . . . . . . . . . . . . . . .  26
   5.  The IANA Printer MIB. . . . . . . . . . . . . . . . . . . . .  29
   6.  The Printer MIB . . . . . . . . . . . . . . . . . . . . . . .  56
       -- Textual conventions for this MIB module. . . . . . . . . .  59
       -- The General Printer Group. . . . . . . . . . . . . . . . .  67

       -- The Responsible Party group. . . . . . . . . . . . . . . .  70
       -- The Auxiliary Sheet Group. . . . . . . . . . . . . . . . .  73
       -- Administrative section  (The General V2 Group) . . . . . .  74
       -- General alert table section  (Alert Table V2 Group). . . .  74
       -- The Cover Table. . . . . . . . . . . . . . . . . . . . . .  75
       -- The Localization Table . . . . . . . . . . . . . . . . . .  76
       -- The System Resources Tables. . . . . . . . . . . . . . . .  78
       -- The Input Group. . . . . . . . . . . . . . . . . . . . . .  81
       -- The Extended Input Group . . . . . . . . . . . . . . . . .  86
       -- The Input Media Group. . . . . . . . . . . . . . . . . . .  87
       -- The Input Switching Group. . . . . . . . . . . . . . . . .  89
       -- The Output Group . . . . . . . . . . . . . . . . . . . . .  90
       -- The Extended Output Group. . . . . . . . . . . . . . . . .  93
       -- The Output Dimensions Group. . . . . . . . . . . . . . . .  95
       -- The Output Features Group. . . . . . . . . . . . . . . . .  97
       -- The Marker Group . . . . . . . . . . . . . . . . . . . . .  98
       -- The Marker Supplies Group. . . . . . . . . . . . . . . . . 104
       -- The Marker Colorant Group. . . . . . . . . . . . . . . . . 107
       -- The Media Path Group . . . . . . . . . . . . . . . . . . . 109
       -- The Print Job Delivery Channel Group . . . . . . . . . . . 113
       -- The Interpreter Group. . . . . . . . . . . . . . . . . . . 115
       -- The Console Group. . . . . . . . . . . . . . . . . . . . . 120
       -- The Alerts Group . . . . . . . . . . . . . . . . . . . . . 125
       -- Conformance Information. . . . . . . . . . . . . . . . . . 129
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . . 147
   8.  Internationalization Considerations . . . . . . . . . . . . . 147
   9.  Security Considerations . . . . . . . . . . . . . . . . . . . 148
   10. References. . . . . . . . . . . . . . . . . . . . . . . . . . 150
       10.1. Normative References. . . . . . . . . . . . . . . . . . 150
       10.2. Informative References. . . . . . . . . . . . . . . . . 151
   Appendix A - Glossary of Terms. . . . . . . . . . . . . . . . . . 153
   Appendix B - Media Size Names . . . . . . . . . . . . . . . . . . 156
   Appendix C - Media Names. . . . . . . . . . . . . . . . . . . . . 158
   Appendix D - Roles of Users . . . . . . . . . . . . . . . . . . . 162
   Appendix E - Overall Printer Status Table . . . . . . . . . . . . 165
   Appendix F - Participants . . . . . . . . . . . . . . . . . . . . 166
   Significant Contributors. . . . . . . . . . . . . . . . . . . . . 168
   Authors' Addresses. . . . . . . . . . . . . . . . . . . . . . . . 170
   Full Copyright Statement. . . . . . . . . . . . . . . . . . . . . 171

1.  Introduction

1.1.  Network Printing Environment

   The management of producing a printed document, in any computer
   environment, is a complex subject.  Basically, the task can be
   divided into two overlapping pieces, the management of printing and
   the management of the printer.  Printing encompasses the entire
   process of producing a printed document from generation of the file
   to be printed, selection of a printer, choosing printing properties,
   routing, queuing, resource management, scheduling, and final printing
   including notifying the user.  Most of the printing process is
   outside the scope of the model presented here; only the management of
   the printer is covered.

              Figure 1 - One Printer's View of the Network

    system   printer    asset     user          user           user
    manager  operator   manager
      O         O         O         O             O              O
     /|\       /|\       /|\       /|\           /|\            /|\
     / \       / \       / \       / \           / \            / \
      |         |         |         |             |              |
+---------+ +-------+ +-------+ +-------+   +-----------+ +-----------+
|configur-| |printer| | asset | |printer|   |   user    | |   user    |
|ator     | |manager| |manager| |browser|   |application| |application|
+---------+ +-------+ +-------+ +-------+   +-----------+ +-----------+
   ^            ^         ^         ^             |             |
   |R/W         |R/W      |R        |R      +-----------+ +-----------+
   |            |         |         |       |  spooler  | |  spooler  |
   |            |         |         |       +-----------+ +-----------+
   |            |         |         |             |             |
   |            |         |         |       +-----------+ +-----------+
   |            |         |         |       |supervisor | |supervisor |
   |            |         |         |       +-----------+ +-----------+
   |            |         |         |        ^       ^     ^       ^
   |            |         |         |        |R      |R/W  |R      |R/W
   v            v         |         |        |       |     |       |
==================================================   |   =====     |
                     |                          print|        print|
                     |SNMP                       data|         data|
  +-----+        +-------+                        PCL|          PCL|
  | MIB |<------>| agent |                 PostScript|   PostScript|
  +-----+        +-------+                       NPAP|         NPAP|
                     |unspecified                etc.|         etc.|
              +=============+  +-----------------+   |             |
              |             |--|channel/interface|<--+             |
              |             |  +-----------------+                 |
              |   PRINTER   |                                      |
              |             |  +-----------------+                 |
              |             |--|channel/interface|<----------------+
              +=============+  +-----------------+

1.2.  Printer Device Overview

   A printer is the physical device that takes media from an input
   source, produces marks on that media according to some page
   description or page control language and puts the result in some
   output destination, possibly with finishing applied.  Printers are
   complex devices that consume supplies, produce waste and may have
   mechanical problems.  In the management of the physical device the
   description, status and alert information concerning the printer and
   its various subparts has to be made available to the management
   application so that it can be reported to the end user, key operators
   for the replenishment of supplies or the repair or maintenance of the
   device.  The information needed in the management of the physical
   printer and the management of a printing job overlap highly and many
   of the tasks in each management area require the same or similar
   information.

1.3.  Categories of Printer Information

   Information about printers is classified into three basic categories:
   descriptions, status and alerts.

1.3.1.  Descriptions

   Descriptions convey information about the configuration and
   capabilities of the printer and its various sub-units.  This
   information is largely static information and does not generally
   change during the operation of the system but may change as the
   printer is repaired, reconfigured or upgraded.  The descriptions are
   one part of the visible state of the printer where state means the
   condition of being of the printer at any point in time.

1.3.2.  Status

   Status is the information regarding the current operating state of
   the printer and its various sub-units.  As an example of the use of
   status, a management application must be able to determine if the
   various sub-units are ready to print or are in some state that
   prevents printing or may prevent printing in the future.

1.3.3.  Alerts

   An Alert is the representation of a reportable event in the printer.
   An event is a change in the state of the printer.  Some of those
   state changes are of interest to a management application and are
   therefore reportable.  Typically, these are the events that affect
   the printer's ability to print.  Alerts usually occur asynchronously
   to the operation of the computer system(s) to which the printer is

   attached. For convenience below, "alert" will be used for both the
   event caused by a change in the printer's state and for the
   representation of that event.

   Alerts can be classified into two basic categories, critical and non-
   critical.  A critical alert is one that is triggered by entry into a
   state in which the printer is stopped and printing can not continue
   until the condition that caused the critical alert is eliminated.
   "Out of paper", "toner empty" and "output bin full" are examples of
   critical alerts.  Non-critical alerts are triggered by those events
   that enter a state in which printing is not stopped.  Such a non-
   critical state may, at some future time, lead to a state in which
   printing may be stopped.  Examples of these kinds of non-critical
   alerts are "input media low", "toner low" and "output bin nearly
   full".  Or, a non-critical alert may simply provide information, such
   as signaling a configuration changed in the printer.

   Description, status and alert information about the printer can be
   thought of as a database describing the printer.  The management
   application for a printer will want to view the printer data base
   differently depending on how and for what purposes the information in
   the database is needed.

1.4.  The Internet-Standard Management Framework

   For a detailed overview of the documents that describe the current
   Internet-Standard Management Framework, please refer to section 7 of
   RFC 3410 [RFC3410].

   Managed objects are accessed via a virtual information store, termed
   the Management Information Base or MIB.  MIB objects are generally
   accessed through the Simple Network Management Protocol (SNMP).
   Objects in the MIB are defined using the mechanisms defined in the
   Structure of Management Information (SMI).  This memo specifies a MIB
   module that is compliant to the SMIv2, which is described in STD 58,
   RFC 2578 [RFC2578], STD 58, RFC 2579 [RFC2579] and STD 58, RFC 2580
   [RFC2580].

1.5.  Requirement Levels

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in [RFC2119].

   Compliant implementations must follow this specification.

2.  Printer Model

   In order to accomplish the management of the printer, an abstract
   model of the printer is needed to represent the sub-units from which
   the printer is composed.  A printer can be described as consisting of
   13 types of sub-units.  It is important to note that the sub-units of
   a printer do not necessarily relate directly to any physically
   identifiable mechanism.  Sub-units can also be a set of definable
   logical processes, such as interpreters for page description
   languages or command processors that set various operating modes of
   the printer.

   Figure 2 shows a block diagram of the printer and its basic 13 sub-
   units.

                    Figure 2 - Printer Block Diagram

                           Physical Connections
                                   |
                                +-----------+
                                |           |
                            +-------------+ |
                            |  Interface  |-+
                            |    MIB-II   |
                            +-------------+
                                   |
                                +-----------+
                                |           |
                            +-------------+ |    +-----------+
                            | Channel     |-+    | Operator  |
                            |             |      |  Console  |
                            +-------------+      +-----------+
                                   |
                                +-----------+        +---------+
                                |           |        |         |
        +-----------+       +-------------+ |    +-----------+ |
        |  General  |       | Interpreter |-+    |  Alerts   |-+
        |  Printer  |       |             |      |           |
        +-----------+       +-------------+      +-----------+
                                   |
                   +-------------------------------+
                   |        System Controller      |
                   |        HOST-RESOURCES-MIB     |
                   +-------------------------------+

   +------+                    +--------+                  +--------+
   |      |                    |        |                  |        |
+-------+ |    +-------+    +---------+ |    +-------+   +--------+ |
| Input |-+  +--------+|    |  Marker |-+  +--------+|   | Output |-+
|       |===>|        |+<==>|         |<==>|        |+==>|        |
+-------+    +--+  +--+     +---------+    +--+  +--+    +--------+
   \            |  ||                         |  ||         \
    \           |  ||                         |  ||          \
     \          |  ||                         |  ||           \
    +--------+  |  |+-------------------------|  ||         +---------+
    |        |  |  +--------------------------+  ||         |         |
+----------+ |  |            Media Path          |+      +----------+ |
|  Media   |-+  +--------------------------------+       | Finisher |-+
|(optional)|                                             |(optional)|
+----------+                                             +----------+

2.1.  Overview of the Printer Model

   The model has three basic parts: (1) the flow of a print file into an
   interpreter and onto the marker, (2) the flow of media through the
   marker and (3) the auxiliary sub-units that control and facilitate
   the two prior flows.  The flow of the print data comes through a
   physical connection on which some form of transport protocol stack is
   running.  The data provided by the transport protocol (interface)
   appears on a channel, which is the input to an interpreter.  The
   interpreter converts the print data into a form suitable for marking
   on the media.

   The media resides in Input sub-units from which the media is selected
   and then transported via a Media Path first to a Marking sub-unit and
   then onto an Output sub-unit with (optionally) some finishing
   operations being performed.  The auxiliary sub-units facilitate
   control of the printer, inquiry/control of the operator panel,
   reporting of alerts and the adaptation of the printer to various
   natural languages and characters sets.  All the software sub-units
   run on the System Controller that represents the processor, memory
   and storage systems of the Printer.  Each of the sub-units is
   discussed in more detail below.

   All of the sub-units other than the Alerts report only state
   information, either a description or a status.  The Alerts sub-unit
   reports event information.

2.2.  Printer Sub-Units

   A printer is composed of 13 types of sub-units, called groups.  The
   following sections describe the different types of sub-units.

2.2.1.  General Printer

   The general printer sub-unit is responsible for the overall control
   and status of the printer.  There is exactly one general printer sub-
   unit in a printer.  The General Printer Group in the model represents
   the general printer sub-unit.  In addition to the providing the
   status of the whole printer and allowing the printer to be reset,
   this Group provides information on the status of the packaging of the
   printer, in particular, the covers.  The general printer sub-unit is
   usually implemented on the system controller.

2.2.1.1.  International Considerations

   The localization portion of the general printer sub-unit is
   responsible for identifying the natural language, country, and
   character set in which certain character strings are expressed in

   this MIB.  Character sets are identified in this MIB using the
   IANACharset textual convention imported from the IANA Character Set
   MIB [CHARMIB].

   There may be one or more localizations supported per printer.  The
   available localizations are specified in the Localization table.
   Localization SHOULD only be performed on string objects which are
   named 'xxxDescription' (sub-unit descriptions) or
   'prtConsoleDisplayBufferText' (local console text).

   The agent SHALL return all other character strings in coded character
   sets in which code positions 0-127 (decimal) are US-ASCII [ASCII].
   The agent SHOULD return all other character strings in the UTF-8
   [RFC3629] transform of ISO 10646 [ISO10646], to conform with the IETF
   Policy on Character Sets and Languages [RFC2277].  Control codes
   (code positions 0-31 and 127 decimal) SHALL NOT be used unless
   specifically required in the DESCRIPTION of an object.

   The character set portion of the general printer Localization table
   is responsible for identifying the possible character sets for the
   operator console, and network management requests for display
   objects.  There may be one or more character sets per printer.
   Default coded character sets for interpreter unit and output octets
   are described in the interpreter sub-unit by
   prtInterpreterDefaultCharSetIn and prtInterpreterDefaultCharSetOut.
   These input/output character sets may be overridden by commands in
   the interpreter language itself.

2.2.2.  Inputs

   Input sub-units are mechanisms that feed media to be marked on into
   the printer.  A printer contains one or more input sub-units.  The
   Input Group in the model represents these.  The model does not
   distinguish fixed input bins from removable trays, except to report
   when a removable tray has been removed.

   There are as many input sub-units as there are distinctly selectable
   input "addresses".  For example, if one tray has both a manual and
   auto feeding option, then this is two input sub-units if these two
   sources can be (must be) separately selected.  However, the above
   would be considered one input sub-unit if putting a sheet in the
   manual feed slot overrides feeding from the contents of the tray.  In
   the second case there is no way to separately select or address the
   manual feed slot.

2.2.3.  Media

   An input sub-unit can hold one or more instances of the media on
   which marking is to be done.  Typically, there is a large set of
   possible media that can be associated with an input.  The Media Group
   is an extension of the Input Group, which represents media in an
   input sub-unit.  The Media Group only describes the current contents
   of each input and not the possible content of the input sub-unit.

2.2.4.  Outputs

   Output sub-units are mechanisms that receive media that has been
   marked on.  The Output Group in the model represents the one or more
   output mechanisms contained by a printer.  The model does not
   distinguish fixed output bins from removable output bins, except to
   report when a removable bin has been removed.

   There are as many output sub-units as there are distinctly selectable
   output "addresses".  Output sub-units can be addressed in two
   different ways: (1) as a set of "mailboxes" which are addressed by a
   specific mailbox selector such as a bin number or a bin name, or (2)
   as a set of "slots" into which multiple copies are collated.
   Sometimes both modes of using the output sub-units can be used on the
   same printer.  All that is important from the viewpoint of the model
   is that the output units can be separately selected.

2.2.5.  Finishers

   A finisher is a sub-unit that performs some operations on the media
   other than marking.  The Finisher Group in the model represents the
   finisher sub-units.  Some examples of finishing processes are
   stapling, punching, binding, inserting, or folding.  Finishing
   processes may have supplies associated with the process.  Stapling,
   binding, and punching are examples of processes that have supplies.
   A printer may have more than one finishing sub-unit and each
   finishing sub-unit may be associated with one or more output sub-
   units. Finishers are described in the companion Finisher MIB
   [RFC3806].

   The model does not specify the exact interaction and sequencing
   between an output device and its associated finisher.  It depends on
   the type of finishing process and the exact implementation of the
   printer system.  This standard allows for the logical association of
   a finishing process with an output device but does not put any
   restrictions on the exact sequence or interaction with the associated
   output device.  The output and finisher sub-units may or may not be
   separate identifiable physical mechanisms depending on the exact

   implementation of a printer.  In addition, a single output device may
   be associated with multiple finishing sub-units and a single
   finishing sub-unit may be associated with multiple output devices.

2.2.6.  Markers

   A marker is the mechanism that produces marks on the print media.
   The Marker Group in the model represents the marker sub-units and
   their associated supplies.  A printer can contain one or more marking
   mechanisms.  Some examples of multiple marker sub-units are a printer
   with separate markers for normal and magnetic ink or an image setter
   that can output to both a proofing device and final film.  Each
   marking device can have its own set of characteristics associated
   with it, such as marking technology and resolution.

   In this model the marker sub-unit is viewed as very generalized and
   encompasses all aspects of a marking process.  For example, in a
   xerographic process, the marking process as well as the fusing
   process would be included in the generalized concept of the marker.
   With the generalized concept of a marking process, the concept of
   multiple marking supplies associated with a single marking sub-unit
   results.  For example, in the xerographic process, there is not only
   a supply of toner, but there can also be other supplies such as a
   fuser supply (e.g., fuser oil) that can be consumed and replaced
   separately.  In addition there can be multiple supplies of toner for
   a single marker device, as in a color process.

2.2.7.  Media Paths

   The media paths encompass the mechanisms in the printer that move the
   media through the printer and connect all other media related sub-
   units: inputs, outputs, markers and finishers.  A printer contains
   one or more media paths.  The Media Path Group in the model
   represents these.  The Media Path group has some objects that apply
   to all paths plus a table of the separate media paths.

   In general, the design of the media paths determines the maximum
   speed of the printer as well as the maximum media size that the
   printer can handle.  Media paths are complex mechanisms and can
   contain many different identifiable sub-mechanisms such as media
   movement devices, media buffers, duplex units and interlocks.  Not
   all of the various sub-mechanisms reside on every media path.  For
   example, one media path may provide printing only on one surface of
   the media (a simplex path) and another media path may have a sub-
   mechanism that turns the media over and feeds it a second time
   through the marker sub-unit (a duplex path).  The duplex path may

   even have a buffer sub-mechanism that allows multiple copies of the
   obverse side to be held before the reverse side of all the copies is
   marked.

2.2.8.  System Controller

   The System Controller is the sub-unit upon which the software
   components of the Printer run.  The Host Resources MIB [RFC2790]
   represents the System Controller in the model.  The Host Resources
   MIB allows for the specification of the processor(s), memory, disk
   storage, file system and other underlying sub-mechanisms of the
   printer.  The controller can range from simple single processor
   systems to multiprocessor systems.  In addition, controllers can have
   a full range of resources such as hard disks.  The printer is modeled
   to have one system controller even though it may have more than one
   processor and multiple other resources associated with it.

2.2.9.  Interfaces

   An interface is the communications port and associated protocols that
   are responsible for the transport of data to the printer.  A printer
   has one or more interface sub-units.  The interfaces are represented
   by the Interfaces Group of MIB-II [RFC1213], [RFC2863].  Some
   examples of interfaces are serial ports (with little or no protocol)
   and Ethernet ports on which one might run Internet IP, Novell IPX,
   etc.

2.2.10.  Print Job Delivery Channels

   The print job delivery channel sub-units identify the independent
   sources of print data (here print data is the information that is
   used to construct printed pages and may have both data and control
   aspects).  A printer may have one or more channels.  The channel sub-
   units are represented by the Print Job Delivery Channel Group in the
   Model.  The electronic path typically identifies each channel and
   service protocol used to deliver print data to the printer.  A
   channel sub-unit may be independently enabled (allowing print data to
   flow) or disabled (stopping the flow of print data).  It has a
   current Control Language that can be used to specify which
   interpreter is to be used for the print data and to query and change
   environment variables used by the interpreters (and SNMP).  There is
   also a default interpreter that is to be used if an interpreter is
   not explicitly specified using the Control Language.  Print Job
   Delivery Channel sub-units can, and usually are, based on an
   underlying interface.

2.2.11.  Interpreters

   The interpreter sub-units are responsible for the conversion of a
   description of intended print instances into images that are to be
   marked on the media.  A printer may have one or more interpreters.
   The Interpreter Group in the Model represents the interpreter sub-
   units. Each interpreter is generally implemented with software
   running on the System Controller sub-unit.  The Interpreter Table has
   one entry per interpreter where the interpreters include both Page
   Description Language (PDL) Interpreters and Control Language
   Interpreters.

2.2.12.  Console

   Many printers have a console on the printer, the operator console
   that is used to display and modify the state of the printer.  The
   console can be as simple as a few indicators and switches or as
   complicated as full screen displays and keyboards.  There can be at
   most one such console.  The Console Group in the model represents
   this console sub-unit.  Although most of the information displayed
   there is also available in the state of the printer as represented by
   the various Groups, it is useful to be able to query and modify the
   operator console remotely.  For example, a management application
   might like to display to its user the current message on the operator
   console of the remote printer or the management application user
   might like to modify the current message on the operators console of
   the remote printer.  As another example, one might have a remote
   application that puts up a pseudo console on a workstation screen.
   Since the rules by which the printer state is mapped onto the console
   and vice versa are not standardized, it is not possible to reproduce
   the console state or the action of console buttons and menus.
   Therefore, the Console Group provides access to the console.  The
   operator console is usually implemented on the system controller with
   additional hardware for input and display.

2.2.13.  Alerts

   The alert sub-unit is responsible for detecting reportable events,
   making an entry in the alert table and, if and only if the event is a
   critical event, initiating a trap.  The exception to this rule is
   when the "alertRemovalofBinaryChangeEntry" trap is generated.  The
   alert sub-unit is represented by the Alerts Group and, in particular,
   the Alert Table.  This table contains information on the severity,
   sub- unit, and detailed location within the sub-unit, alert code and
   description of each alert that is currently active within the
   printer.  Each reportable event causes an entry to be made in the
   Alert Table.

2.2.13.1.  Status and Alerts

   Summary information about the state of the printer is reported at
   three separate levels: (1) The status of the printer as a whole is
   reported in the Host Resources MIB, (2) The status of various sub-
   units is reported in the principle table of the Group that represents
   the sub-unit, and (3) Alert codes are reported in the Alert Table.

2.2.13.2.  Overall Printer Status

   Of the many states a printer can be in, certain states are more
   "interesting" because of the distinct actions they are likely to
   provoke in the administrator.  These states may be applied to the
   printer as a whole, or to a particular sub-unit of the printer.
   These named states are:

   Non Critical Alert Active - For the printer this means that one or
   more sub-units have a non-critical alert active.  For a sub-unit,
   this means that the sub-unit has a non-critical alert active.

   Critical Alert Active - For the printer this means that one or more
   sub-units have a critical alert active.  For a sub-unit, this means
   that the sub-unit has a critical alert active.

   Unavailable - The printer or sub-unit is unavailable for use (this is
   the same as "broken" or "down" in other terminology).  A trained
   service person is typically necessary to make it available.

   Moving on-line or off-line - The printer is either off-line, in the
   process of moving off-line or moving back on-line.  For example, on
   printers with motorized hoppers, reloading paper involves a
   transition to off-line to open the paper bin, filling the hopper and,
   finally, a transition back to on-line as the paper bin is
   repositioned for printing.

   Standby - The printer or sub-unit is not immediately available but
   can accept new instructions.

   Available - The printer or subunit is functioning normally.

   Idle - The printer or subunit is immediately available.

   Active - The printer or subunit is performing its primary function.

   Busy - The printer or subunit is performing a function (not
   necessarily its primary function) and is not immediately available
   for its primary function.

   The Host Resources MIB [RFC2790] provides three status objects that
   can be used to describe the status of a printer: (1) hrDeviceStatus
   in the entry in the hrDeviceTable; (2) hrPrinterStatus in the
   hrPrinterTable; and (3) hrPrinterDetectedErrorState in the
   hrPrinterTable.  These objects describe many of the states that a
   printer can be in.  The following table shows how the values of the
   three printer-related objects in the Host Resources MIB relate to the
   states named above:

   Printer       hrDeviceStatus hrPrinterStatus hrPrinterDetected-
   Status                                       ErrorState

   Idle           running(2)     idle(3)        none set

   Busy/          running(2)     printing(4)
   Active

   Non Critical   warning(3)     idle(3) or     could be: lowPaper,
   Alert Active                  printing(4)    lowToner, or
                                                serviceRequested

   Critical       down(5)        other(1)       could be: jammed,
   Alert Active                                 noPaper, noToner,
                                                coverOpen, or
                                                serviceRequested

   Unavailable    down(5)        other(1)

   Moving off-    warning(3)     idle(3) or     offline
   line                          printing(4)
   Off-line       down(5)        other(1)       offline

   Moving         down(5)        warmup(5)
   on-line

   Standby        running(2)     other(1)

   These named states are only a subset of the possible states - they
   are not an exhaustive list of the possible states.  Nevertheless,
   several things should be noted.  When using these states, it is not
   possible to detect when both critical and non-critical alerts are
   pending - if both are pending, the Critical Alert Active state will
   prevail.  In addition, a printer in the Standby state will be
   represented in the Host Resources MIB with a device status of
   running(2) and a printer status of other(1), a set of states that
   don't uniquely distinguish this important printer state.

   Detailed status per sub-unit is reported in the sub-unit status
   fields.

2.2.13.2.1.  Host Resources MIB Printer Status

   For completeness, the definitions of the Printer Status objects of
   the Host Resources MIB [RFC2790] are given below:

   hrDeviceStatus OBJECT-TYPE
       SYNTAX  INTEGER {
                  unknown(1),
                  running(2),
                  warning(3),
                  testing(4),
                  down(5)
             }
       ACCESS  read-only
       STATUS  mandatory
       DESCRIPTION
        "The current operational state of the device
        described by this row of the table.  A value
        unknown(1) indicates that the current state of the
        device is unknown.  running(2) indicates that the
        device is up and running and that no unusual error
        conditions are known.  The warning(3) state
        indicates that agent has been informed of an
        unusual error condition by the operational software
        (e.g., a disk device driver) but that the device
        is still 'operational'.  An example would be high
        number of soft errors on a disk.  A value of
        testing(4), indicates that the device is not
        available for use because it is in the testing
        state.  The state of down(5) is used only when
        the agent has been informed that the device is
        not available for any use."
       ::= { hrDeviceEntry 5 }

   hrPrinterStatus OBJECT-TYPE
       SYNTAX INTEGER {
                 other(1),
                 unknown(2),
                 idle(3),
                 printing(4),
                 warmup(5)
             }
       ACCESS  read-only
       STATUS  mandatory
       DESCRIPTION

        "The current status of this printer device.  When in the
        idle(3), printing(4), or warmup(5) state, the corresponding
        hrDeviceStatus should be running(2) or warning(3).  When in
        the unknown(2) state, the corresponding hrDeviceStatus
        should be unknown(1)."
       ::= { hrPrinterEntry 1 }

   hrPrinterDetectedErrorState OBJECT-TYPE
       SYNTAX OCTET STRING (0..128)
       ACCESS read-only
       STATUS mandatory
       DESCRIPTION
        "This object represents any error conditions detected by the
        printer.  The error conditions are encoded as an OCTET STRING
        with the following definitions:

        Condition          Bit #

        lowPaper             0
        noPaper              1
        lowToner             2
        noToner              3
        doorOpen             4
        jammed               5
        offline              6
        serviceRequested     7

        inputTrayMissing     8
        outputTrayMissing    9
        markerSupplyMissing 10
        outputNearFull      11
        outputFull          12
        inputTrayEmpty      13
        overduePreventMaint 14

        Bit # 15 is not assigned.

        If multiple conditions are currently detected and the
        hrDeviceStatus would not otherwise be unknown(1) or
        testing(4), the hrDeviceStatus shall correspond to the worst
        state of those indicated, where down(5) is worse than
        warning(3), which is worse than running(2).

        Bits are numbered starting with the most significant bit of
        the first byte being bit 0, the least significant bit of the
        first byte being bit 7, the most significant bit of the
        second byte being bit 8, and so on.  A one bit encodes that
        the condition was detected, while a zero bit encodes that

        the condition was not detected.

        This object is useful for alerting an operator to specific
        warning or error conditions that may occur, especially those
        requiring human intervention."
         ::= { hrPrinterEntry 2 }

2.2.13.2.2.  Sub-unit Status

   Sub-unit status is reported in the entries of the principle table in
   the Group that represents the sub-unit.  For sub-units that report a
   status, there is a status column in the table and the value of this
   column is always an integer formed in the following way.

   The PrtSubUnitStatusTC is an integer that is the sum of 5 distinct
   values, Availability, Non-Critical, Critical, On-line, and
   Transitioning.  These values are:

   Availability                           value

           Available and Idle               0       000'b
           Available and Standby            2       010'b
           Available and Active             4       100'b
           Available and Busy               6       110'b
           Unavailable and OnRequest        1       001'b
           Unavailable because Broken       3       011'b
           Unknown                          5       101'b

   Non-Critical

           No Non-Critical Alerts           0
           Non-Critical Alerts              8

   Critical

           No Critical Alerts               0
           Critical Alerts                 16

   On-Line

           State is On-Line                 0
           State is Off-Line               32

   Transitioning

           At intended state                0
           Transitioning to intended state 64

   For example, an input (tray) that jammed on the next to the last page
   may show a status of 27 (unavailable because broken (3) + a critical
   state (16), jammed, and a noncritical state (8), low paper).

2.2.13.3.  Alert Tables

   The Alert Group consists of a single table in which all active alerts
   are represented.  This section provides an overview of the table and
   a description of how it is managed.  The basic content of the alert
   table is the severity (critical or non-critical) of the alert, the
   Group and entry where a state change caused the alert, additional
   information about the alert (a more detailed location, an alert code,
   and a description), and an indication of the level of training needed
   to service the alert.

   The Alert Table contains some information that is redundant, for
   example that an event has occurred, and some information that is only
   represented in the Alert Table, for example the additional
   information.  A single table was used because a single entry in a
   group could cause more than one alert, for example paper jams in more
   than one place in a media path.  Associating the additional
   information with the entry in the affected group would only allow one
   report where associating the additional information with the alert
   makes multiple reports possible.  Every time an alert occurs in the
   printer, the printer makes one or more entries into the Alert Table.
   The printer determines if an event is to be classified as critical or
   non-critical.  If the severity of the Alert is "critical", the
   printer sends a trap or event notification to the host indicating
   that the table has changed.  Whether or not a trap is sent, the
   management application is expected to poll the printer on a regular
   basis and to read and parse the table to determine what conditions
   have changed, in order to provide reliable information to the
   management application user.

2.2.13.4.  Alert Table Management

   The alert tables are sparsely populated tables.  This means the
   tables will only contain entries of the alerts that are currently
   active and the number of rows, or entries in the table will be
   dynamic.  More than one event can be added or removed from the event
   tables at a time depending on the implementation of the printer.

   There are basically two kinds of events that produce alerts: binary
   change events and unary change events.  Binary change events come in
   pairs: the leading edge event and the trailing edge event.  The
   leading edge event enters a state from which there is only one exit;
   for example, going from running to stopped with a paper jam.  The
   only exit from this state is fixing the paper jam and it is clear

   when that is accomplished.  The trailing edge event exits the state
   that was entered by the leading edge event.  In the example above,
   fixing the paper jam is the trailing edge event.

   It is relatively straightforward to manage binary change events in
   the Alert Table.  Only the leading edge event makes an entry in the
   alert table.  This entry persists in the Alert Table until the
   trailing edge event occurs at which point this event is signaled by
   the removal of the leading edge event entry in the Alert Table.  That
   is, a trailing edge event does not create an entry; it removes the
   corresponding leading edge event.  Removing the leading edge entry
   may cause the unary change event "alertRemovalofBinaryChangeEntry" to
   be added to the table.  With binary change events it is possible to
   compute the maximum number that can occur at the same time and
   construct an Alert Table that would hold that many events.  There
   would be no possibility of table overflow and no information about
   outstanding events would be lost.

   Unfortunately, there are some events that are not binary changes.
   This other category of event, the unary change event, is illustrated
   by the configuration change event.  With this kind of event the state
   of the machine has changed, but to a state which is (often) just as
   valid as the state that was left and from which no return is
   necessary.  For example, an operator may change the paper that is in
   the primary input source from letter to legal.  At some time in the
   future the paper may be changed back to letter, but it might be
   changed to executive instead.  This is where the problem occurs.  It
   is not obvious how long to keep unary change event entries in the
   Alert Table.  If they were never removed, the Alert Table would
   continue to grow indefinitely.

   The agent needs to have an algorithm implemented for the management
   of the alert table, especially in the face of combinations of binary
   and unary alerts that would overflow the storage capacity of the
   table.  When the table is full and new alerts need to be added, an
   old alert to be deleted should be chosen using the following rules:

   1. Find a non-critical unary alert and delete it.  If there are
      multiple non-critical unary alerts, it is suggested that the
      oldest one is chosen.  If there are no non-critical unary alerts,
      then,

   2. Find a non-critical binary alert and delete it.  If there are
      multiple non-critical binary alerts, it is suggested that the
      oldest one is chosen.  If there are no non-critical binary alerts,
      then,

   3. Find a critical (binary) alert and delete it.  If there are
      multiple critical alerts, it is suggested that the oldest one be
      chosen.  Agent implementers are encouraged to provide at least
      enough storage space for the maximum number of critical alerts
      that could occur simultaneously.  Note that all critical alerts
      are binary.

   In the event that a critical binary alert has been deleted out of the
   alert table; when space allows and the alert condition still exists,
   the alert should be re-added to the alert table even if there was no
   subsequent transition into the associated state.  It is recommended
   that this be done for non-critical binary alerts as well.  Note that
   the new alert entry will not have the same index as the original
   entry that was moved out of the table.

   Note that because the Alert Index is a monotonically increasing
   integer there will be gaps in the values in the table when an alert
   is deleted.  The management application may want to re-acquire the
   Printer state and check for state changes that it did not observe in
   the Alert Table if such gaps are detected.

2.3.  Read-Write Objects

   Some objects in the printer MIB reflect the existence or amount of a
   given resource within the printer.  Some examples of such resources
   are the size and number of sheets in a paper tray or the existence of
   certain output options.  Some printers have automatic sensors for
   these resources.  Most printers lack sensors for every property of
   every resource.  The management application is allowed to write into
   objects that hold descriptive or existence values for printers that
   cannot sense these values.  The ability to change the value of a
   read- write object may depend on the implementation of the agent.
   Many objects in the MIB are given read-write access, but a printer
   implementation might only permit a management application to change
   the value if the printer can not sense the value itself.  Note that
   even though some objects explicitly state the behavior of conditional
   ability to change values, any read-write object may act this way.

   Generally, an object is given read-write access in the Printer MIB
   specification if:

   1. The object involves installation of a resource that some printers
      cannot themselves detect.  Therefore, external means are needed to
      inform the printer of the installation.  (Here external means
      include using the operator console, or remote management
      application) and

   2. The printer will behave differently if the installation of the
      resource is reported than the printer would if the installation
      were not reported; that is, the object is not to be used as a
      place to put information not used by the printer, i.e., not a
      "sticky-note". Another way of saying this is that the printer
      believes that information given it and acts as if the information
      were true.  For example, on a printer that cannot sense the size,
      if one paper size is loaded, but another size is set into the
      paper size object, then the printer will use the size that was set
      as its current paper size in its imaging and paper handling.

   3. The printer may get hints that it may not know about the existence
      or properties of certain resources.  For example, a paper tray may
      be removed and re-inserted.  When this removal and insertion
      happens, the printer may either assume that a property, such as
      the size of paper in the tray, has not changed or the printer may
      change the value of the associated object to "unknown", as might
      be done for the amount of paper in the tray.  As long as the
      printer acts according to the value in  the object either strategy
      is acceptable.

   4. It is an implementation-specific matter as to whether or not MIB
      object values are persistent across power cycles or cold starts.
      It is particularly important that the values of the
      prtMarkerLifeCount object persist throughout the lifetime of the
      printer.  Therefore, if the value of any MIB object persists
      across power cycles, then the prtMarkerLifeCount object must also
      persist.

2.4.  Enumerations

   Enumerations (enums) are sets of symbolic values defined for use with
   one or more objects.  Commonly used enumeration sets are assigned a
   symbolic data type name (textual convention), rather than being
   specified in the SYNTAX clause of each individual object definition.

   Textual conventions defined in the Printer MIB or the companion IANA
   Printer MIB are extensible by RFC publication or by Designated Expert
   Review (see the 'IANA Considerations' section of this Printer MIB and
   the DESCRIPTION clause in MODULE-IDENTITY of IANA Printer MIB).  All
   of these textual conventions are:

   a) used more than once in the Printer MIB itself; or

   b) imported and used in the companion Finisher MIB; or

   c) imported and used in any other, including vendor private, MIB
      modules.

   The Printer MIB has also defined the following special values for use
   with objects of the syntax "Integer32" to define conditions that are
   outside of the normal numeric range:  other(-1), unknown(-2), and
   partial(-3).  The 'partial' value means that there is some supply
   remaining (but the amount is indeterminate) or there is some capacity
   remaining (but the amount is indeterminate).  The Integer32 range
   field indicates in which objects these special values are valid.

2.4.1.  Registering Additional Enumerated Values

   The Printer MIB and the companion IANA Printer MIB each defines one
   category of textual convention, according to the process employed to
   control the addition of new enumerations:

   Type 1 - All of the legal values are defined in the Printer MIB.
   Additional enumerated values require the publication of a new Printer
   MIB.

   Type 2 - All of the legal values are registered in the IANA Printer
   MIB.  Additional enumerated values require a Designated Expert Review
   defined in "Guidelines for Writing an IANA Considerations Section in
   RFCs" [RFC2434].  The Designated Expert will be selected by the IETF
   Area Director(s) of the Applications Area.

3.  Groups from other MIB Specifications

   This section identifies the groups from other MIBs that shall be
   supported to supplement and complete a printer MIB implementation.
   The section also describes some of the less obvious characteristics
   of the Printer MIB structure that are related to the inclusion of
   these other MIB groups.

3.1.  System Group

   All objects in the system group of MIB-II [RFC1213] shall be
   implemented; however, as described in paragraph 2.4, implementers
   should carefully consider what constitutes the "system".

3.2.  System Controller

   The storage and device groups of the Host Resources MIB [RFC2790]
   shall be implemented to support the printer(s) system controller, and
   any supporting devices.  If deemed appropriate by the implementer,
   other groups of the Host Resources MIB (System, Running Software,
   Running Software Performance, and Installed Software) may be
   implemented.  Because of the structure of the Host Resources MIB, the
   devices constituting the system controller are at the same level as
   the printer.

3.3.  Interface Group objects

   All objects in the Interfaces Group of MIB-II [RFC1213] shall be
   implemented for all print information interfaces to the printer,
   including non-network interfaces.

3.3.1.  Interface Types

   The interfaces group of RFC 1213 [RFC1213] contains only a partial
   list of interface types that can be specified in the "ifType" object.
   For a complete list of interface types, refer to the IANA registry at
   "ftp://ftp.isi.edu/mib/iana.mib/ianaiftype.mib"

4.  Differences from RFC 1759

   This document supersedes and replaces RFC 1759.  However, a compliant
   implementation of RFC 1759 is also compliant with this document.  The
   following changes to RFC 1759 are included:  (See the printmib
   REVISION/DESCRIPTION clause for additional details of changes.)

   -  Minor editorial corrections and changes.  Updated the cover page
      and added the "SNMP Management Framework" boilerplate to section
      1.

   -  Updated figure 2 to use MIB names instead of RFC numbers.

   -  Updated Coded Character Set description and IANA registration
      process.

   -  Change hrPrinterDetectedErrorState "coverOpen" (bit 4) to
      "doorOpen" per RFC 2790.

   -  Added second octet of hrPrinterDetectedErrorState as partially
      described and assigned in the updated Host Resources MIB (RFC
      2790).

   -  Remove fixed association of hrDeviceStatus (warning/down) from
      hrPrinterDetetctedErrorState per RFC 2790.

   -  Instead of showing bit 15 as "not assigned" in the quote from RFC
      2790 in the hrPrinterDetectedErrorState object, removed that from
      the tabular form and added it as a sentence, because the RFC
      doesn't show bit 15 in the tabular form.

   -  Clarified the international considerations.

   -  Added prtChannelInformation to the Channel Group textual-
      conventions on a per channel basis to clarify the channel
      description and enhance interoperability.

   -  Deprecated some obsolete channel types.

   -  Extended the Alert Table and PrtMarkerSuppliesSupplyUnit textual
      conventions to include values from the Finisher MIB.

   -  Clarified alerts based on unary vs. binary change events.

   -  Added (optional) unary change event
      alertRemovalOfBinaryChangeEntry(1801).

   -  Establish a convention for contact information for
      prtGeneralCurrentOperator and prtGeneralServicePerson.

   -  Added prtAuxiliarySheetStartupPage     PresentOnOff

   -  Added prtAuxiliarySheetBannerPage      PresentOnOff

   -  Added prtGeneralPrinterName            OCTET STRING

   -  Added prtGeneralSerialNumber           OCTET STRING

   -  Added prtInputNextIndex                Integer32

   -  Added the Input Switching Group

   -  Added prtAlertCriticalEvents           Counter32

   -  Added prtAlertAllEvents                Counter32

   -  Updated PrtAlertCode enums including generic alert codes.

   -  Created five OBJECT-GROUPs (prtAuxilliarySheetGroup,
      prtInputSwitchingGroup, prtGeneralV2Group, prtAlertTableV2Group,
      prtChannelV2Group).  Added the nine new objects to them
      (prtAuxiliarySheetStartupPage, prtAuxiliarySheetBannerPage,
      prtGeneralPrinterName, prtGeneralSerialNumber,
      prtAlertCriticalEvents, prtAlertAllEvents,
      prtInputMediaLoadTimeout, prtInputNextIndex,
      prtChannelInformation).  Created one new NOTIFICATION-GROUP
      (prtAlertTrapGroup) to contain printerV2Alert.  Included the new
      OBJECT-GROUPs and the NOTIFICATION_GROUP in prtMIBCompliance, all
      in GROUP (not MANDATORY-GROUP) clauses.  The nine new objects are
      optional, i.e., this document is backward compatible with RFC
      1759.

   -  prtAlertTime is strongly recommended.

   -  Deprecated the use of alert codes doorOpen(501) and
      doorClosed(502), in favor of coverOpened(3) and coverClosed(4).

   -  Added the PrtConsoleDisableTC and PrtMarkerAddressabilityUnitTC
      textual conventions, and changed the PrtConsoleDisable and
      PrtMarkerAddressabilityUnit objects' syntax to use those TCs, and
      changed the PrtGeneralEntry and PrtMarkerColorantEntry SEQUENCEs
      to reflect the new syntax.

   -  Added textual conventions "PrtLocalizedDescriptionStringTC" and
      "PrtConsoleDescriptionStringTC" and updated several objects to use
      them.

   -  Changed most enumerations to textual conventions and therefore
      changed the SYNTAX of many objects from RFC 1759 to specify the
      appropriate textual conventions.  (28 TCs were added.)

   -  Changed the TC names "MediaUnit" to "PrtMediaUnitTC",
      "CapacityUnit" to "PrtCapacityUnitTC", and "SubUnitStatus" to
      "PrtSubUnitStatusTC"

   -  All objects with a MAX-ACCESS of read-write now have a MIN-ACCESS
      of read-only.

   -  Added 'IANA Considerations' and 'Internationalization
      Considerations' as top level sections, per IETF guidelines.

   -  Updated Security and Copyright sections.

   -  Updated references and split into Normative and Informative
      groups.

   -  Added Appendix E - Overall Printer Status Table.

   -  Updated participant and contact information.

   -  Removed CodedCharSet Textual Convention, replaced with an import
      of the IANACharset.

   -  Removed all comment statements that indicated objects or groups
      are mandatory or optional.  Avoids any potential conflicts with
      the conformance section.

   -  Added text to empty description clauses.  (prtStorageRefTable,
      prtDeviceRefTable, prtMarkerTable, prtMediaPathTable,
      prtChannelTable, prtInterpreterTable, prtConsoleLightTable, and
      prtAlertTable)

   -  Added "DEFVAL { unknown }" to prtInterpreterDefaultCharSetIn and
      prtInterpreterDefaultCharSetOut.

   -  Changed "...values are expected to remain stable..." to "...values
      SHOULD remain stable..." in the description clauses for the index
      object in all tables.

   -  Added ranges to all objects with a syntax of Integer32.

   -  Revised the description clause for prtAlertGroupIndex.

   -  Added additional text to the description clause for
      prtMediaPathEntry, prtChannelEntry, prtInterpreterEntry, and
      printerV2Alert.

   -  Added text to section 2.4 to explain the usage of textual
      conventions in this MIB and others.  Also added a note defining
      the common usage of the enumerations 'other(-1)' and 'unknown(-2)'

   -  Changed range of prtStorageRefSeqNumber, prtDeviceRefSeqNumber,
      and prtConsoleLightIndex from (0..65535) to (1..65535) since index
      values cannot be zero.  (Typo in RFC 1759)

   -  The PWG Standard for Standardized Media Names is now recommended
      for the objects prtInputMediaName, prtInputMediaColor, and
      prtInputMediaType.

   -  Added chSMTP(45) to prtChannelTypeTC.

5.  The IANA Printer MIB

IANA-PRINTER-MIB DEFINITIONS ::= BEGIN
 -- http://www.iana.org/assignments/ianaprinter-mib

IMPORTS
    MODULE-IDENTITY,
        mib-2
            FROM SNMPv2-SMI                              -- [RFC2578]
    TEXTUAL-CONVENTION
            FROM SNMPv2-TC;                              -- [RFC2579]

ianaPrinterMIB MODULE-IDENTITY
    LAST-UPDATED  "200406020000Z" -- June 2, 2004

    ORGANIZATION  "IANA"
    CONTACT-INFO  "Internet Assigned Numbers Authority
                  Postal: ICANN
                          4676 Admiralty Way, Suite 330
                          Marina del Rey, CA 90292

                  Tel:    +1 310 823 9358
                  E-Mail: iana@iana.org"

    DESCRIPTION   "This MIB module defines a set of printing-related
                  TEXTUAL-CONVENTIONs for use in Printer MIB (RFC 3805),
                  Finisher MIB (RFC 3806), and other MIBs which need to
                  specify printing mechanism details.

                  Any additions or changes to the contents of this MIB
                  module require either publication of an RFC, or
                  Designated Expert Review as defined in RFC 2434,
                  Guidelines for Writing an IANA Considerations Section
                  in RFCs.  The Designated Expert will be selected by
                  the IESG Area Director(s) of the Applications Area.

                  Copyright (C) The Internet Society (2004). The
                  initial version of this MIB module was published
                  in RFC 3805.  For full legal notices see the RFC
                  itself or see:
                  http://www.ietf.org/copyrights/ianamib.html"

    REVISION      "200406020000Z"  -- June 2, 2004
    DESCRIPTION   "Original version, published in coordination
                  with Printer MIB (RFC 3805)."
    ::= { mib-2 109 }

--
-- Generic TEXTUAL-CONVENTIONs
--

PrtCoverStatusTC ::= TEXTUAL-CONVENTION
    -- This TC was extracted from prtCoverStatus in RFC 1759.
    STATUS    current
    DESCRIPTION
        "Values for encoding the state of a particular cover or
        access panel on the printer case or enclosure."
    SYNTAX    INTEGER {
                  other(1),
                  coverOpen(3),
                  coverClosed(4),
                  interlockOpen(5),
                  interlockClosed(6)

                  }

--
-- General Group TEXTUAL-CONVENTIONs
--

PrtGeneralResetTC ::= TEXTUAL-CONVENTION
    -- This TC was extracted from prtGeneralReset in RFC 1759.
    STATUS    current
    DESCRIPTION
        "Values for reading and writing the prtGeneralReset object.

        If a device does not have NVRAM, the device shall none the
        less respond to a SET with the value resetToNVRAM(5) with a
        sort of warm reset that resets the device to implementation-
        defined state that is preferably under control of the system
        administrator by some means outside the scope of the Printer
        MIB specification."

    SYNTAX    INTEGER {
                  notResetting(3),
                  powerCycleReset(4), -- Cold Start
                  resetToNVRAM(5), -- Warm Start
                  resetToFactoryDefaults(6) -- Reset contents of
                                            -- NVRAM to factory
                                            -- defaults
                  }
--
-- Channel Group TEXTUAL-CONVENTIONs
--

PrtChannelTypeTC ::= TEXTUAL-CONVENTION
    -- This TC was extracted from prtChannelType in RFC 1759.
    STATUS    current
    DESCRIPTION
        "This enumeration indicates the type of channel that is
        receiving jobs."
    SYNTAX    INTEGER {
                  other(1),
                  chSerialPort(3),
                  chParallelPort(4),
                  chIEEE1284Port(5),
                  chSCSIPort(6),
                  chAppleTalkPAP(7),
                      -- AppleTalk Printer
                      -- Access Protocol (PAP)
                      --
                      -- prtChannelInformation entry:

                      --
                      -- Printer Name
                      --   Keyword:      Name
                      --   Syntax:       Name
                      --   Status:       Optional
                      --   Multiplicity: Single
                      --   Description:  The name of the printer
                      --     within the AppleTalk naming scope
                  chLPDServer(8),
                      -- prtChannelInformation entry:
                      --
                      -- Printer queue name
                      --   Keyword:      Queue
                      --   Syntax:       Name
                      --   Status:       Mandatory
                      --   Multiplicity: Single
                      --   Description: queue name as
                      --     defined in [RFC1179].
                  chNetwareRPrinter(9),
                      -- Novell, Inc.
                      -- For each entry of this type, the
                      -- prtChannelInformation must have a pair of
                      -- keywords.  For Netware 3.x channels this must
                      -- be a (PServer, Printer) pair.  For Netware
                      -- 4.x channels and for IntranetWare channels
                      -- this must be a (NDSTree, NDSPrinter) pair.
                      --
                      -- prtChannelInformation entries:

                      -- Print Server Name
                      --   Keyword:      PServer
                      --   Syntax:       Name
                      --   Status:       Mandatory
                      --   Multiplicity: Single
                      --   Description:  The Pserver's SAP name
                      --
                      -- Printer Number
                      --   Keyword:      Printer
                      --   Syntax:       Integer
                      --   Status:       Mandatory
                      --   Multiplicity: Single
                      --   Description:  The printer number
                      --
                      -- NDSTree
                      --   Keyword:      NDSTree
                      --   Syntax:       Name
                      --   Multiplicity: Single
                      --   Description:  The tree's SAP name

                      --
                      -- NDS Printer object
                      --   Keyword:      NDSPrinter
                      --   Syntax:       Text (Unicode)
                      --   Status:       Mandatory
                      --   Multiplicity: Single
                      --   Description:  The fully qualified
                      --                 name of the Printer
                      --
                      -- In the Netware 3.x environment, the
                      -- client checks the Bindery object
                      -- representing the named PServer.  The
                      -- client then checks for queues which
                      -- are associated with the numbered
                      -- printer.  In the 4.x and IntraNetware
                      -- environment, the client looks up the
                      -- queues which are associated with the
                      -- NDS Printer Object in the named Tree.
                      -- Depending on client access rights to
                      -- those queues, the client submits jobs
                      -- to the appropriate queue.
                  chNetwarePServer(10),
                      -- Novell,Inc.
                      -- For each entry of this type, the
                      -- prtChannelInformation must have a pair
                      -- of keywords.  For Netware 3.x channels
                      -- this must be a (Server, PServer) pair.
                      -- For Netware 4.x and IntranetWare
                      -- channels, this must be a
                      -- (NDSTree, NDSPServer) pair.
                      --
                      -- prtChannelInformation entries:
                      --
                      -- Server Name
                      --   Keyword:      Server
                      --   Syntax:       Name
                      --   Status:       Mandatory
                      --   Multiplicity: Single
                      --   Description:  The SAP name of the
                      --   server for which the PServer is defined.
                      --
                      -- PServer
                      --   Keyword:      PServer
                      --   Syntax:       Name
                      --   Status:       Mandatory
                      --   Multiplicity: Single
                      --   Description:  The bindery name of
                      --                 the PServer

                      --
                      -- NDS Tree
                      --   Keyword:      NDSTree
                      --   Syntax:       Name
                      --   Status:       Mandatory
                      --   Multiplicity: Single
                      --   Description:  The NDS Tree name
                      --
                      -- PServer
                      --   Keyword:      NDSPServer
                      --   Syntax:       Text (Unicode)
                      --   Status:       Mandatory
                      --   Multiplicity: Single
                      --   Description:  The fully qualified
                      --     name of the PServer object in the tree.
                      --
                      -- In the 3.x environment, the client
                      -- checks the bindery object
                      -- representing the named PServer on the
                      -- named Server.  In the 4.x and
                      -- IntranetWare environment,
                      -- the client checks the NDS object
                      -- representing the named PServer in the
                      -- named Tree.  In either case, the
                      -- client then checks for all queues
                      -- associated with the Pserver object.
                      -- Depending on client access rights
                      -- to those queues, the client submits
                      -- jobs to the appropriate queue.
                  chPort9100(11),
                      -- DEPRECATED
                      -- (see chPortTCP - 37; chBidirPortTCP - 38)
                  chAppSocket(12),
                      -- A bi-directional, LPD-like, protocol using
                      -- 9101 for control and 9100 for data.
                      -- Adobe Systems, Inc.
                  chFTP(13),         -- [RFC959]
                  chTFTP(14),        -- [RFC1350]
                  chDLCLLCPort(15),
                  chIBM3270(16),     -- IBM Coax
                  chIBM5250(17),     -- IBM Twinax
                  chFax(18),
                  chIEEE1394(19),
                  chTransport1(20),
                      -- TCP port 35, for reserved TCP port list see
                      -- [RFC3232].  This RFC should also be
                      -- referenced for other channel
                      -- enumerations utilizing TCP port

                      -- numbers 0 through 1024.
                  chCPAP(21),      -- TCP port 170
                      -- Digital Equipment Corp.
                  chDCERemoteProcCall(22), -- OSF
                      -- DEPRECATED
                  chONCRemoteProcCall(23), -- SUN Microsystems
                      -- DEPRECATED
                  chOLE(24),         -- Microsoft
                      -- DEPRECATED
                  chNamedPipe(25),
                  chPCPrint(26),   -- Banyan
                  chServerMessageBlock(27),
                      -- File/Print sharing protocol used by
                      -- various network operating systems
                      -- from IBM 3Com, Microsoft and others
                      --
                      -- prtChannelInformation entry:
                      --
                      -- Service Name
                      --   Keyword:      Name
                      --   Syntax:       Name
                      --   Status:       Optional
                      --   Multiplicity: Single
                      --   Description:  The service name of
                      --                 the printer
                  chDPMF(28),   -- IBM Infoprint
                  chDLLAPI(29), -- Microsoft
                      -- DEPRECATED
                  chVxDAPI(30), -- Microsoft
                      -- DEPRECATED
                  chSystemObjectManager(31), -- IBM
                  chDECLAT(32),
                      -- Digital Equipment Corp.
                      --
                      -- prtChannelInformation entries:
                      --
                      -- Port Name
                      --   Keyword:      Port
                      --   Syntax:       Name
                      --   Status:       Conditionally
                      --                 Mandatory
                      --                 (see note below)
                      --   Multiplicity: Single
                      --   Description:  LAT port name
                      --
                      -- Service Name
                      --   Keyword:      Service
                      --   Syntax:       Name

                      --   Status:       Conditionally
                      --                 Mandatory
                      --   Multiplicity: Single
                      --   Description:  LAT service name
                      --
                      -- The LAT channel may be
                      -- identified by either a port or
                      -- service, so either a
                      -- Port or Service entry must be
                      -- specified, but not both.
                  chNPAP(33),
                  chUSB(34), -- Not in RFC 1759
                             -- Universal Serial Bus
                  chIRDA(35), -- Not in RFC 1759
                              -- Infrared Data Assoc. Prot.
                  chPrintXChange(36),  -- Not in RFC 1759
                                       -- PrintXChange Protocol
                  chPortTCP(37),  -- Not in RFC 1759
                      -- A unidirectional "raw" TCP
                      -- channel that uses an administratively
                      -- assigned TCP port address.
                      --
                      -- prtChannelInformation entry:
                      --
                      -- Port Number
                      --   Keyword:      Port
                      --   Syntax:       decimal number
                      --   Status:       Mandatory
                      --   Multiplicity: Single
                      --   Description:  TCP port number
                  chBidirPortTCP(38),  -- Not in RFC 1759
                      -- A bi-directional version of chPortTCP
                      --
                      -- prtChannelInformation entries:
                      -- (See chPortTCP)
                  chUNPP(39),  -- Not in RFC 1759
                      -- Universal Network Printing
                      -- Protocol(UNPP). A bi-directional,
                      -- multiport network printing
                      -- application protocol available on
                      -- multiple transport protocols.
                      -- Underscore, Inc.
                      -- Contact: info@underscore.com
                  chAppleTalkADSP(40),  -- Not in RFC 1759
                      -- AppleTalk Data Stream Protocol.
                      -- ADSP is part of the AppleTalk
                      -- suite of protocols.
                      -- It is a symmetric, connection-

                      -- oriented protocol that makes
                      -- possible the establishment
                      -- and maintenance of full-duplex
                      -- streams of data bytes between
                      -- two sockets in an AppleTalk
                      -- internet.
                      -- See [APPLEMAC].
                  chPortSPX(41),  -- Not in RFC 1759
                      -- Sequenced Packet Exchange (SPX)
                      -- socket.
                      -- Novell, Inc. Similar to TCP, a
                      -- bi-directional data pipe using
                      -- Novell SPX as a transport.
                      --
                      -- prtChannelInformation entries:
                      --
                      -- Network Number
                      --   Keyword:      Net
                      --   Syntax:       HexString
                      --   Status:       Mandatory
                      --   Multiplicity: Single
                      --   Description:  The network number
                      --
                      -- Node Number
                      --   Keyword:      Node
                      --   Syntax:       HexString
                      --   Status:       Mandatory
                      --   Multiplicity: Single
                      --   Description:  The node number
                      --
                      -- Socket Number
                      --   Keyword:      Socket
                      --   Syntax:       HexString
                      --   Status:       Mandatory
                      --   Multiplicity: Single
                      --   Description:  The SPX socket number
                      --
                      -- There must be exactly one "Net" and
                      -- one "Node" and one "Socket" entry.  A
                      -- HexString is a binary value
                      -- represented as a string of
                      -- ASCII characters using hexadecimal
                      -- notation.
                  chPortHTTP(42),  -- Not in RFC 1759
                      -- Hypertext Transfer Protocol. See [RFC1945]
                      -- and [RFC2616].
                  chNDPS(43),  -- Not in RFC 1759
                      -- Novell, Inc.

                      --
                      -- prtChannelInformation entry:
                      --
                      -- Printer Agent Name
                      --   Keyword:      PA
                      --   Syntax:       Name
                      --   Status:       Mandatory
                      --   Multiplicity: Single
                      --   Description:  The NDPS Printer
                      --                 Agent Name
                  chIPP(44),  -- Not in RFC 1759
                      -- Internet Printing Protocol (IPP),
                      -- (IPP/1.1 - see [RFC2910] and [RFC2911])
                      -- also applies to all future versions of IPP.
                      --
                      -- IPP Printer URI
                      --   Keyword:      URI
                      --   Syntax:       URI (Unicode UTF-8 per
                      --                 [RFC2396])
                      --   Status:       Mandatory
                      --   Multiplicity: Single
                      --   Default:      not applicable
                      --   Description:  URI of this IPP Printer
                      --     within Internet naming scope.  Unicode
                      --     UTF-8 [RFC3629] string with
                      --     hexadecimal escapes for any non-ASCII
                      --     characters (per [RFC2396]).
                      --   Conformance: An IPP Printer shall list all
                      --     IPP URI it supports (one per IPP Channel
                      --     entry).  If a URI contains the 'http:'
                      --     scheme it must have an explicit port.
                      --   See: [RFC3629], [RFC2396], [RFC2910],
                     --     [RFC2911].
                      --
                      -- IPP Printer Client Authentication
                      --   Keyword:      Auth
                      --   Syntax:       Keyword
                      --   Status:       Optional
                      --   Multiplicity: Single
                      --   Default:      'none'
                      --   Description:  A client authentication
                      --     mechanism supported for this IPP Printer
                      --     URI:
                      --       'none'
                      --         no client authentication mechanism
                      --       'requesting-user-name'
                      --         authenticated user in 'requesting-
                      --         user-name'

                      --       'basic'
                      --         authenticated user via HTTP Basic
                      --         mechanism
                      --       'digest'
                      --         authenticated user via HTTP Digest
                      --         mechanism
                      --       'certificate'
                      --         authenticated user via certificate
                      --         mechanism
                      --   Conformance: An IPP Printer should list
                      --     all IPP client authentication mechanisms
                      --     it supports (one per IPP Channel entry).
                      --     See: [RFC2911] and [RFC2910].
                      --
                      -- IPP Printer Security
                      --   Keyword:      Security
                      --   Syntax:       Keyword
                      --   Status:       Optional
                      --   Multiplicity: Single
                      --   Default:      'none'
                      --   Description:  A security mechanism
                      --     supported for this IPP Printer URI:
                      --     'none'
                      --       no security mechanism
                      --     'ssl3'
                      --       SSL3 secure communications channel
                      --       protocol
                      --     'tls'
                      --       TLS secure communications channel
                      --       protocol
                      --   Conformance: An IPP Printer should list
                      --     all IPP security mechanisms it supports
                      --     (one per IPP Channel entry).
                      --   See: [RFC2246], [RFC2911].
                      --
                      -- IPP Printer Protocol Version
                      --   Keyword:      Version
                      --   Syntax:       Keyword
                      --   Status:       Optional
                      --   Multiplicity: Multiple
                      --   Default:      '1.1'
                      --   Description:  All of the IPP protocol
                      --     versions (major.minor) supported for
                      --     this IPP Printer URI:
                      --     '1.0'
                      --       IPP/1.0 conforming Printer
                      --     '1.1'
                      --       IPP/1.1 conforming Printer

                      --   Conformance:  An IPP Printer should list
                      --     all IPP versions it supports (all listed
                      --     in each IPP Channel entry).  An IPP
                      --     Client should select the highest
                      --     numbered version the IPP Client supports
                      --     for use in all IPP Requests (for optimum
                      --     interworking).
                      --   See: [RFC2911].
                  chSMTP(45)
                      -- Print Job submission via Simple Mail
                      -- Transfer Protocol (SMTP) - see [RFC2821]
                      --
                      -- prtChannelInformation entry:
                      --
                      --   Keyword:      Mailto
                      --   Syntax:       Name
                      --   Status:       Mandatory
                      --   Multiplicity: Single
                      --   Default:      not applicable
                      --   Description:  The SMTP URL of the printer.
}

--
-- Interpreter Group TEXTUAL-CONVENTIONs
--

PrtInterpreterLangFamilyTC ::= TEXTUAL-CONVENTION
    -- This TC was extracted from prtInterpreterLangFamily in RFC 1759.
    STATUS    current
    DESCRIPTION
        "This enumeration indicates the type of interpreter that is
        receiving jobs."
    SYNTAX    INTEGER {
        other(1),
        unknown(2),          -- Not in RFC 1759
        langPCL(3),          -- PCL.  Starting with PCL version 5,
                             -- HP-GL/2 is included as part of the
                             -- PCL language.
                             -- PCL and HP-GL/2 are registered
                             -- trademarks of Hewlett-Packard
                             -- Company.
        langHPGL(4),         -- Hewlett-Packard Graphics Language.
                             -- HP-GL is a registered trademark of
                             -- Hewlett-Packard Company.
        langPJL(5),          -- Peripheral Job Language.  Appears in
                             -- the data stream between data intended
                             -- for a page description language.
                             -- Hewlett-Packard Co.

        langPS(6),           -- PostScript (tm) Language
                             -- Postscript - a trademark of Adobe
                             -- Systems Incorporated which may be
                             -- registered in certain jurisdictions
        langIPDS(7),         -- Intelligent Printer Data Stream
                             -- Bi-directional print data stream for
                             -- documents consisting of data objects
                             -- (text, image, graphics, bar codes),
                             -- resources (fonts, overlays) and page,
                             -- form and finishing instructions.
                             -- Facilitates system level device
                             -- control, document tracking and error
                             -- recovery throughout the print
                             -- process.
                             -- IBM Corporation.
        langPPDS(8),         -- IBM Personal Printer Data Stream.
                             -- Originally called IBM ASCII, the name
                             -- was changed to PPDS when the Laser
                             -- Printer was introduced in 1989.
                             -- Lexmark International, Inc.
        langEscapeP(9),      -- Epson Corp.
        langEpson(10),
        langDDIF(11),        -- Digital Document Interchange Format
                             -- Digital Equipment Corp., Maynard MA
        langInterpress(12),
                             -- Xerox Corp.
        langISO6429(13),     -- ISO 6429.  Control functions for
                             -- Coded Character Sets (has ASCII
                             -- control characters, plus additional
                             -- controls for
                             -- character imaging devices.)
        langLineData(14),    -- line-data:  Lines of data as
                             -- separate ASCII or EBCDIC records
                             -- and containing no control functions
                             -- (no CR, LF, HT, FF, etc.)
                             -- For use with traditional line
                             -- printers.  May use CR and/or LF to
                             -- delimit lines, instead of records.
                             -- See ISO 10175 Document Printing
                             -- Application (DPA) [ISO10175].
        langMODCA(15),       -- Mixed Object Document Content
                             -- Architecture
                             -- Definitions that allow the
                             -- composition, interchange, and
                             -- presentation of final form
                             -- documents as a collection of data
                             -- objects (text, image, graphics, bar
                             -- codes), resources (fonts, overlays)

                             -- and page, form and finishing
                             -- instructions.
                             -- IBM Corporation.
        langREGIS(16),       -- Remote Graphics Instruction Set,
                             -- Digital Equipment Corp., Maynard MA
        langSCS(17),         -- SNA Character String
                             -- Bi-directional print data stream for
                             -- SNA LU-1 mode of communication.
                             -- IBM
        langSPDL(18),        -- ISO 10180 Standard Page Description
                             -- Language
                             -- ISO Standard
        langTEK4014(19),     -- Tektronix Corp.
        langPDS(20),
        langIGP(21),         -- Printronix Corp.
        langCodeV(22),       -- Magnum Code-V, Image and printer
                             -- control language used to control
                             -- impact/dot-matrix printers.
                             -- QMS, Inc., Mobile AL
        langDSCDSE(23),      -- DSC-DSE:  Data Stream Compatible and
                             -- Emulation Bi-directional print data
                             -- stream for non-SNA (DSC) and SNA LU-3
                             -- 3270 controller (DSE) communications
                             -- IBM
        langWPS(24),         -- Windows Printing System, Resource
                             -- based command/data stream used by
                             -- Microsoft At Work Peripherals.
                             -- Developed by the Microsoft
                             -- Corporation.
        langLN03(25),        -- Early DEC-PPL3, Digital Equipment
                             -- Corp.
        langCCITT(26),
        langQUIC(27),        -- QUIC (Quality Information Code), Page
                             -- Description Language for laser
                             -- printers.  Included graphics, printer
                             -- control capability and emulation of
                             -- other well-known printer.
                             -- QMS, Inc.
        langCPAP(28),        -- Common Printer Access Protocol
                             -- Digital Equipment Corp.
        langDecPPL(29),      -- Digital ANSI-Compliant Printing
                             -- Protocol
                             -- (DEC-PPL)
                             -- Digital Equipment Corp.
        langSimpleText(30),
                             -- simple-text:  character coded data,
                             -- including NUL, CR , LF, HT, and FF
                             -- control characters.  See ISO 10175

                             -- Document Printing Application (DPA)
                             -- [ISO10175].
        langNPAP(31),        -- Network Printer Alliance Protocol
                             -- (NPAP).  This protocol has been
                             -- superseded by the IEEE 1284.1 TIPSI
                             -- Std (ref. LangTIPSI(49)).
        langDOC(32),         -- Document Option Commands, Appears in
                             -- the data stream between data
                             -- intended for a page description.
                             -- QMS, Inc.
        langimPress(33),     -- imPRESS, Page description language
                             -- originally developed for the
                             -- ImageServer product line. A binary
                             -- language providing representations
                             -- of text, simple graphics, and some
                             -- large forms (simple
                             -- bit-map and CCITT group 3/4
                             -- encoded).The
                             -- language was intended to be sent over
                             -- an 8-bit channel and supported early
                             -- document preparation languages (e.g.,
                             -- TeX and TROFF).
                             -- QMS, Inc.
        langPinwriter(34),
                             -- 24 wire dot matrix printer  for
                             -- USA, Europe, and Asia except
                             -- Japan.
                             -- More widely used in Germany, and
                             -- some Asian countries than in US.
                             -- NEC
        langNPDL(35),        -- Page printer  for Japanese market.
                             -- NEC
        langNEC201PL(36),    -- Serial printer language used in
                             -- the Japanese market.
                             -- NEC
        langAutomatic(37),
                             -- Automatic PDL sensing.  Automatic
                             -- sensing of the interpreter
                             -- language family by the printer
                             -- examining the document content.
                             -- Which actual interpreter language
                             -- families are sensed depends on
                             -- the printer implementation.
        langPages(38),       -- Page printer Advanced Graphic
                             -- Escape Set
                             -- IBM Japan
        langLIPS(39),        -- LBP Image Processing System
        langTIFF(40),        -- Tagged Image File Format (Aldus)

        langDiagnostic(41),
                             -- A hex dump of the input to the
                             -- interpreter
        langPSPrinter(42),
                             -- The PostScript Language used for
                             -- control (with any PDLs)
                             -- Adobe Systems Incorporated
        langCaPSL(43),       -- Canon Print Systems Language
        langEXCL(44),        -- Extended Command Language
                             -- Talaris Systems Inc.
        langLCDS(45),        -- Line Conditioned Data Stream
                             -- Xerox Corporation
        langXES(46),         -- Xerox Escape Sequences
                             -- Xerox Corporation
        langPCLXL(47),       -- Not in RFC 1759
                             -- Printer Control Language. Extended
                             -- language features for printing, and
                             -- printer control.
                             -- Hewlett-Packard Co.
        langART(48),         -- Not in RFC 1759
                             -- Advanced Rendering Tools (ART).
                             -- Page Description language
                             -- originally developed for the Laser
                             -- Press printers.
                             -- Technical reference manual: "ART IV
                             -- Reference Manual", No F33M.
                             -- Fuji Xerox Co., Ltd.
        langTIPSI(49),       -- Not in RFC 1759
                             -- Transport Independent Printer
                             -- System Interface (ref. IEEE Std.
                             -- 1284.1)
        langPrescribe(50),   -- Not in RFC 1759
                             -- Page description and printer
                             -- control language. It can be
                             -- described with ordinary ASCII
                             -- Technical reference manual:
                             -- "PRESCRIBE II Programming Manual"
        langLinePrinter(51), -- Not in RFC 1759
                             -- A simple-text character stream which
                             -- supports the control codes LF, VT,
                             -- FF, and plus Centronics or
                             -- Dataproducts Vertical Format Unit
                             -- (VFU) language is commonly used on
                             -- many older model line and matrix
                             -- printers.
        langIDP(52),         -- Not in RFC 1759
                             -- Imaging Device Protocol
                             -- Apple Computer.

        langXJCL(53),        -- Not in RFC 1759
                             -- Xerox Job Control Language (JCL).
                             -- A Job Control language originally
                             -- developed for the LaserPress printers
                             -- and is capable of switching PDLs.
                             -- Technical reference manual:
                             -- "ART IV Reference Manual", No F33M.
                             -- Fuji Xerox Co., Ltd.
        langPDF(54),         -- Not in RFC 1759
                             -- Adobe Portable Document Format
                             -- Adobe Systems, Inc.
        langRPDL(55),        -- Not in RFC 1759
                             -- Ricoh Page Description Language for
                             -- printers.
                             -- Technical manual "RPDL command
                             -- reference" No.307029
                             -- RICOH, Co. LTD
        langIntermecIPL(56), -- Not in RFC 1759
                             -- Intermec Printer Language for label
                             -- printers.
                             -- Technical Manual: "IPL Programmers
                             -- Reference Manual"
                             -- Intermec Corporation
        langUBIFingerprint(57),  -- Not in RFC 1759
                             -- An intelligent basic-like programming
                             -- language for label printers.
                             -- Reference Manual: "UBI Fingerprint
                             -- 7.1", No. 1-960434-00
                             -- United Barcode Industries
        langUBIDirectProtocol(58),  -- Not in RFC 1759
                             -- An intelligent control language for
                             -- label printers.
                             -- Programmers guide: " UBI Direct
                             -- Protocol", No. 1-960419-00
                             -- United Barcode Industries
        langFujitsu(59),     -- Not in RFC 1759
                             -- Fujitsu Printer Language
                             -- Reference Manual:
                             -- "FM Printer Sequence" No. 80HP-0770
                             -- FUJITSU LIMITED
        langCGM(60),         -- Not in RFC 1759
                             -- Computer Graphics Metafile
                             -- MIME type 'image/cgm'
        langJPEG(61),        -- Not in RFC 1759
                             -- Joint Photographic Experts Group
                             -- MIME type 'image/jpeg'
        langCALS1(62),       -- Not in RFC 1759
                             -- US DOD CALS1 (see MIL-STD-1840)

                             -- MIME type 'application/cals-1840'
        langCALS2(63),       -- Not in RFC 1759
                             -- US DOD CALS2 (see MIL-STD-1840)
                             -- MIME type 'application/cals-1840'
        langNIRS(64),        -- Not in RFC 1759
                             -- US DOD NIRS (see MIL-STD-1840)
                             -- MIME type 'application/cals-1840'
        langC4(65)           -- Not in RFC 1759
                             -- US DOD C4 (see MIL-STD-1840)
                             -- MIME type 'application/cals-1840'
}

--
-- Input/Output Group TEXTUAL-CONVENTIONs
--

PrtInputTypeTC ::= TEXTUAL-CONVENTION
    -- This TC was extracted from prtInputType in RFC 1759.
    STATUS    current
    DESCRIPTION
        "The type of technology (discriminated primarily according to
        feeder mechanism type) employed by a specific component or
        components."
    SYNTAX    INTEGER {
                  other(1),
                  unknown(2),
                  sheetFeedAutoRemovableTray(3),
                  sheetFeedAutoNonRemovableTray(4),
                  sheetFeedManual(5),
                  continuousRoll(6),
                  continuousFanFold(7)
                  }

PrtOutputTypeTC ::= TEXTUAL-CONVENTION
    -- This TC was extracted from prtOutputType in RFC 1759.
    STATUS    current
    DESCRIPTION
        "The Type of technology supported by this output subunit."
    SYNTAX    INTEGER {
                  other(1),
                  unknown(2),
                  removableBin(3),
                  unRemovableBin(4),
                  continuousRollDevice(5),
                  mailBox(6),
                  continuousFanFold(7)
                  }

--
-- Marker Group TEXTUAL-CONVENTIONs
--

PrtMarkerMarkTechTC ::= TEXTUAL-CONVENTION
    -- This TC was extracted from prtMarkerMarkTech in RFC 1759.
    STATUS    current
    DESCRIPTION
        "The type of marking technology used for this marking
        subunit."
    SYNTAX    INTEGER {
                  other(1),
                  unknown(2),
                  electrophotographicLED(3),
                  electrophotographicLaser(4),
                  electrophotographicOther(5),
                  impactMovingHeadDotMatrix9pin(6),
                  impactMovingHeadDotMatrix24pin(7),
                  impactMovingHeadDotMatrixOther(8),
                  impactMovingHeadFullyFormed(9),
                  impactBand(10),
                  impactOther(11),
                  inkjetAqueous(12),
                  inkjetSolid(13),
                  inkjetOther(14),
                  pen(15),
                  thermalTransfer(16),
                  thermalSensitive(17),
                  thermalDiffusion(18),
                  thermalOther(19),
                  electroerosion(20),
                  electrostatic(21),
                  photographicMicrofiche(22),
                  photographicImagesetter(23),
                  photographicOther(24),
                  ionDeposition(25),
                  eBeam(26),
                  typesetter(27)
                  }

PrtMarkerSuppliesTypeTC ::= TEXTUAL-CONVENTION
    -- This TC was extracted from prtMarkerSuppliesType in RFC 1759.
    STATUS    current
    DESCRIPTION
        "The type of this supply."
    SYNTAX    INTEGER {
                  other(1),
                  unknown(2),

                -- Values for Printer MIB
                  toner(3),
                  wasteToner(4),
                  ink(5),
                  inkCartridge(6),
                  inkRibbon(7),
                  wasteInk(8),
                  opc(9),               -- photo conductor
                  developer(10),
                  fuserOil(11),
                  solidWax(12),
                  ribbonWax(13),
                  wasteWax(14),
                  fuser(15),            -- Not in RFC 1759
                  coronaWire(16),       -- Not in RFC 1759
                  fuserOilWick(17),     -- Not in RFC 1759
                  cleanerUnit(18),      -- Not in RFC 1759
                  fuserCleaningPad(19), -- Not in RFC 1759
                  transferUnit(20),     -- Not in RFC 1759
                  tonerCartridge(21),   -- Not in RFC 1759
                  fuserOiler(22),       -- Not in RFC 1759
                -- End of values for Printer MIB
                -- Values for Finisher MIB
                  water(23),            -- Not in RFC 1759
                  wasteWater(24),       -- Not in RFC 1759
                  glueWaterAdditive(25),-- Not in RFC 1759
                  wastePaper(26),       -- Not in RFC 1759
                  bindingSupply(27),    -- Not in RFC 1759
                  bandingSupply(28),    -- Not in RFC 1759
                  stitchingWire(29),    -- Not in RFC 1759
                  shrinkWrap(30),       -- Not in RFC 1759
                  paperWrap(31),        -- Not in RFC 1759
                  staples(32),          -- Not in RFC 1759
                  inserts(33),          -- Not in RFC 1759
                  covers(34)            -- Not in RFC 1759
                -- End of values for Finisher MIB
                  }

--
-- Media Path TEXTUAL-CONVENTIONs
--

PrtMediaPathTypeTC ::= TEXTUAL-CONVENTION
    -- This TC was extracted from prtMediaPathType in RFC 1759.
    STATUS    current
    DESCRIPTION
        "The type of the media path for this media path."
    SYNTAX    INTEGER {

                  other(1),
                  unknown(2),
                  longEdgeBindingDuplex(3),
                  shortEdgeBindingDuplex(4),
                  simplex(5)
                  }

--
-- Console Group TEXTUAL-CONVENTIONs
--

PrtConsoleColorTC ::= TEXTUAL-CONVENTION
    -- This TC was extracted from prtConsoleColor in RFC 1759.
    STATUS     current
    DESCRIPTION
        "The color of this light."
    SYNTAX    INTEGER {
                  other(1),
                  unknown(2),
                  white(3),
                  red(4),
                  green(5),
                  blue(6),
                  cyan(7),
                  magenta(8),
                  yellow(9),
                  orange(10)        -- Not in RFC 1759
                  }

PrtConsoleDisableTC ::= TEXTUAL-CONVENTION
    -- This TC was extracted from prtConsoleDisable in RFC 1759.
    STATUS     current
    DESCRIPTION
        "This value indicates whether or not input is accepted from
        the operator console.  A value of 'enabled' indicates that
        input is accepted from the console, and a value of 'disabled'
        indicates that input is not accepted from the console. "
    SYNTAX    INTEGER {
                  enabled(3),
                  disabled(4)
                  }

--
-- Alert Group TEXTUAL-CONVENTIONs
--

PrtAlertTrainingLevelTC ::= TEXTUAL-CONVENTION
    -- This TC was extracted from prtAlertTrainingLevel in RFC 1759.

    STATUS    current
    DESCRIPTION
        "The level of training required to handle this alert, if
        human intervention is required.  The noInterventionRequired
        value should be used if the event does not require any human
        intervention.  The training level is an enumeration that is
        determined and assigned by the printer manufacturer based on
        the information or training required to handle this alert.
        The printer will break alerts into these different training
        levels.  It is the responsibility of a management application
        in the system to determine how a particular alert is handled
        and how and to whom that alert is routed.  The following are
        the four training levels of alerts:

        Field Service - Alerts that typically require advanced
            training and technical knowledge of the printer and its
            subunits.  An example of a technical person would be a
            manufacturer's Field Service representative, or other
            person formally trained by the manufacturer or similar
            representative.
        Trained - Alerts that require an intermediate or moderate
            knowledge of the printer and its subunits.  A typical
            example of such an alert is replacing a toner cartridge.
        Untrained -     Alerts that can be fixed without prior
            training either because the action to correct the alert
            is obvious or the printer can help the untrained person
            fix the problem.  A typical example of such an alert is
            reloading paper trays or emptying output bins on a low
            end printer.
        Management -    Alerts that have to do with overall operation
            of and configuration of the printer.  Examples of such
            management events are configuration change of subunits."
    SYNTAX    INTEGER {
                  other(1),
                  unknown(2),
                  untrained(3),
                  trained(4),
                  fieldService(5),
                  management(6),
                  noInterventionRequired(7)  -- Not in RFC 1759
                 }

PrtAlertGroupTC ::= TEXTUAL-CONVENTION
    -- Values in the range 1 to 29 must not be IANA-assigned without
    -- re-publishing Printer MIB.
    -- Values of 30 and greater are for use in MIBs that augment
    -- the Printer MIB, such as the Finisher MIB.
    -- This TC extracted from prtAlertGroup in RFC 1759.

    STATUS    current
    DESCRIPTION
        "The type of subunit within the printer model that this alert
        is related.  Input, output, and markers are examples of
        printer model groups, i.e., examples of types of subunits.
        Wherever possible, the enumerations match the sub-identifier
        that identifies the relevant table in the Printer MIB.

        NOTE: Alert type codes have been added for the Host Resources
        MIB storage table and device table.  These additional types
        are for situations in which the printer's storage and device
        objects must generate alerts (and possibly traps for critical
        alerts)."
    SYNTAX    INTEGER {
                  other(1),
                -- (2) is reserved for conformance information
                -- Values for Host Resources MIB
                  hostResourcesMIBStorageTable(3),
                  hostResourcesMIBDeviceTable(4),
                -- Values for Printer MIB
                  generalPrinter(5),
                  cover(6),
                  localization(7),
                  input(8),
                  output(9),
                  marker(10),
                  markerSupplies(11),
                  markerColorant(12),
                  mediaPath(13),
                  channel(14),
                  interpreter(15),
                  consoleDisplayBuffer(16),
                  consoleLights(17),
                  alert(18),                   -- Not in RFC 1759
                -- Values (5) to (29) reserved for Printer MIB
                -- Values for Finisher MIB
                  finDevice(30),               -- Not in RFC 1759
                  finSupply(31),               -- Not in RFC 1759
                  finSupplyMediaInput(32),     -- Not in RFC 1759
                  finAttribute(33)             -- Not in RFC 1759
                -- Values (30) to (39) reserved for Finisher MIB
                  }

PrtAlertCodeTC ::= TEXTUAL-CONVENTION
    -- This TC was extracted from prtAlertCode in RFC 1759.
    STATUS    current
    DESCRIPTION
        "The code that describes the type of alert for this entry in

        the table.  Binary change event alerts describe states of the
        subunit while unary change event alerts describe a single
        event.  The same alert code can be used for a binary change
        event or a unary change event, depending on implementation.
        Also, the same alert code can be used to indicate a critical
        or non-critical (warning) alert, depending on implementation.
        The value of prtAlertSeverityLevel specifies binary vs. unary
        and critical vs. non-critical for each event for the
        implementation.

        While there are some specific codes for many subunits, the
        generic codes should be used for most subunit alerts.  The
        network management station can then query the subunit
        specified by prtAlertGroup to determine further subunit
        status and other subunit information.

        An agent shall not add two entries to the alert table for the
        same event, one containing a generic event code and the other
        containing a specific event code; the agent shall add only
        one entry in the alert table for each event; either generic
        (preferred) or specific, not both.

        Implementation of the unary change event
        alertRemovalOfBinaryChangeEntry(1801) is optional.  When
        implemented, this alert code shall indicate to network
        management stations that the trailing edge of a binary change
        event has occurred and the corresponding alert entry has been
        removed from the alert table.  As with all events, the
        alertRemovalOfBinaryChangeEntry(1801) alert shall be placed
        at the end of the alert table.  Such an alert table entry
        shall specify the following information:

        prtAlertSeverityLevel   warningUnaryChangeEvent(4)
        prtAlertTrainingLevel   noInterventionRequired(7)
        prtAlertGroup           alert(18)
        prtAlertGroupIndex      the index of the row in the
                                alert table of the binary
                                change event that this event
                                has removed.
        prtAlertLocation        unknown (-2)
        prtAlertCode            alertRemovalOfBinaryChangeEntry(1801)
        prtAlertDescription     <description or null string>
        prtAlertTime            the value of sysUpTime at
                                the time of the removal of the
                                binary change event from the
                                alert table.

        Optionally, the agent may generate a trap coincident with

        removing the binary change event and placing the unary change
        event alertRemovalOfBinaryChangeEntry(1801) in the alert
        table.  For such a trap, the prtAlertIndex sent with the above
        trap parameters shall be the index of the
        alertRemovalOfBinaryChangeEvent row that was added to the
        prtAlertTable; not the index of the row that was removed from
        the prtAlertTable."
    SYNTAX    INTEGER {
                  other(1),
                      -- an event that is not represented
                      -- by one of the alert codes
                      -- specified below.
                  unknown(2),
                      -- The following generic codes are common to
                      -- multiple groups.  The NMS may examine the
                      -- prtAlertGroup object to determine what group
                      -- to query for further information.
                  coverOpen(3),
                  coverClosed(4),
                  interlockOpen(5),
                  interlockClosed(6),
                  configurationChange(7),
                  jam(8),
                  subunitMissing(9),           -- Not in RFC 1759
                      -- The subunit tray, bin, etc.
                      -- has been removed.
                  subunitLifeAlmostOver(10),   -- Not in RFC 1759
                  subunitLifeOver(11),         -- Not in RFC 1759
                  subunitAlmostEmpty(12),      -- Not in RFC 1759
                  subunitEmpty(13),            -- Not in RFC 1759
                  subunitAlmostFull(14),       -- Not in RFC 1759
                  subunitFull(15),             -- Not in RFC 1759
                  subunitNearLimit(16),        -- Not in RFC 1759
                  subunitAtLimit(17),          -- Not in RFC 1759
                  subunitOpened(18),           -- Not in RFC 1759
                  subunitClosed(19),           -- Not in RFC 1759
                  subunitTurnedOn(20),         -- Not in RFC 1759
                  subunitTurnedOff(21),        -- Not in RFC 1759
                  subunitOffline(22),          -- Not in RFC 1759
                  subunitPowerSaver(23),       -- Not in RFC 1759
                  subunitWarmingUp(24),        -- Not in RFC 1759
                  subunitAdded(25),            -- Not in RFC 1759
                  subunitRemoved(26),          -- Not in RFC 1759
                  subunitResourceAdded(27),    -- Not in RFC 1759
                  subunitResourceRemoved(28),  -- Not in RFC 1759
                  subunitRecoverableFailure(29),
                                               -- Not in RFC 1759
                  subunitUnrecoverableFailure(30),

                                               -- Not in RFC 1759
                  subunitRecoverableStorageError(31),
                                               -- Not in RFC 1759
                  subunitUnrecoverableStorageError(32),
                                               -- Not in RFC 1759
                  subunitMotorFailure(33),     -- Not in RFC 1759
                  subunitMemoryExhausted(34),  -- Not in RFC 1759
                  subunitUnderTemperature(35), -- Not in RFC 1759
                  subunitOverTemperature(36),  -- Not in RFC 1759
                  subunitTimingFailure(37),    -- Not in RFC 1759
                  subunitThermistorFailure(38), -- Not in RFC 1759

                -- General Printer group
                  doorOpen(501),    -- DEPRECATED
                                    -- Use coverOpened(3)
                  doorClosed(502),  -- DEPRECATED
                                    -- Use coverClosed(4)
                  powerUp(503),
                  powerDown(504),
                  printerNMSReset(505),        -- Not in RFC 1759
                      -- The printer has been reset by some
                      -- network management station(NMS)
                      -- writing into 'prtGeneralReset'.
                  printerManualReset(506),     -- Not in RFC 1759
                      -- The printer has been reset manually.
                  printerReadyToPrint(507),    -- Not in RFC 1759
                      -- The printer is ready to print. (i.e.,
                      -- not warming up, not in power save
                      -- state, not adjusting print quality,
                      -- etc.).

                -- Input Group
                  inputMediaTrayMissing(801),
                  inputMediaSizeChange(802),
                  inputMediaWeightChange(803),
                  inputMediaTypeChange(804),
                  inputMediaColorChange(805),
                  inputMediaFormPartsChange(806),
                  inputMediaSupplyLow(807),
                  inputMediaSupplyEmpty(808),
                  inputMediaChangeRequest(809), -- Not in RFC 1759
                      -- An interpreter has detected that a
                      -- different medium is need in this input
                      -- tray subunit.  The prtAlertDescription may
                      -- be used to convey a human readable
                      -- description of the medium required to
                      -- satisfy the request.
                  inputManualInputRequest(810), -- Not in RFC 1759

                      -- An interpreter has detected that manual
                      -- input is required in this subunit.  The
                      -- prtAlertDescription may be used to convey
                      -- a human readable description of the medium
                      -- required to satisfy the request.
                  inputTrayPositionFailure(811), -- Not in RFC 1759
                      -- The input tray failed to position correctly.
                  inputTrayElevationFailure(812),
                                        -- Not in