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Archive-name: modems/ZyXEL/FAQ/part3 Last-modified: 1995/04/09 Version: 4.2 Posting-frequency: monthly;the third Monday of every month ZyXEL Modems Frequently Asked Questions List Version 4.2 Archived at: rtfm.mit.edu in /pub/usenet/news.answers/modems/ZyXEL/FAQ/part[1-5] Please mail any additions to: firstname.lastname@example.org ================= Table of Contents ================= T. Technical Frequently Asked Questions *T.1 What is the latest official ROM release(s)? T.1A How does one determine the ROM revision? *T.1B What does one do if one does not have have the latest ROMs? T.1C Where does one obtain EPROMs to update modem ROMs? T.1Ci Will Toshiba EPROMs work? T.1D What format are the ROM images? T.1E What does one do with the latest ROMs? T.2 In which countries are ZyXEL modems certified to operate? T.3 What are known country codes? T.3A How does one change a country code? T.4 What kind of power supply is used? T.5 Are ZyXEL modems Hayes-compatible? T.6 How do ZyXEL modems deal with escape sequences? T.7 What is the chip set / data pump used in the modems? T.7A What is the advantage of this design? T.8 What is the meaning of the T401 and T402 timeouts seen in an "AT I2"? T.9 What is the selective reject in V.42? T.10 What is the "Capture modem manufacturer information" feature? T.11 What settings are required to attain the fastest data connection? T.12 Will V.32terbo be implemented? T.13 When will V.FAST (V.34) be available? T.14 Will V.34 fallback speeds be implemented? T.15 How does one patch GNU NetFax to work properly? T.16 Why doesn't faxing from WordPerfect work properly? T.17 Once a fax is received, what does one do? T.18 How does enabling callback security affect the reception of faxes? T.19 What is the easiest way to record voice? T.20 How good is the voice quality? T.20A How does the voice quality compare versus the Rockwell chipset? T.20B When will better quality speech at higher encoding rates be available? T.21 Can a voice call be detected by the modem? T.22 Are the specifications for converting voice files available? T.23 Can speech be digitized/recorded and played back simultaneously? *T.24A Can DTMF tones be recognized at any time during recording/playback? *T.24B Why is there a noise before a voice file is played through telco line ? T.25 What kind of problems exist with using voice software on Macintoshes? T.26 Why is there a slight hissing sound from the speaker? T.27 How does one make Caller ID (CID/CND) work correctly? T.27A What exactly is the hardware modification needed for CID/CND and EDR? T.27B What software modifications are needed? T.27C What if CID/CND and EDR still doesn't work? T.28 What changes are needed for overseas calling? T.29 What modifications are needed to S/S+ models to get the eye pattern option? ================================================================================ Subject: T. Technical Frequently Asked Questions ================================================================================ Subject: T.1 What is the latest official ROM release(s)? -------------------------------------------------------------------------------- 1.04 For Elite 2864 model 1.09 For Elite 2864I model 6.15 For U-1496 modems with 1-Mbit EPROMs 5.05c For really old non-U-1496plus models with 1-Mbit and 512-Kbit EPROMs 6.23 For U-1496P (portable) model The ROM release previous to the 6.15 was version 6.14. The latest quick reference card and the release notes for the latest ROMs can be obtained via anonymous FTP from the Taiwan or USA FTP sites. When a new official ROM revision is released, it is available for *ALL* ZyXEL modems. Thus when the 6.14 ROMs were released for the U-1494E modems, it was also available for the E+/B/B+/S/S+ modems (and other ZyXEL models). Beta ROMs have been known to ship in modems supplied by ZyXEL USA, so you may have a newer version than those listed here.