| Patent application number | Description | Published |
|---|
| 20080232368 | NETWORK SYSTEM - When a user terminal makes a connection request, a router acquires a group address that the user terminal can join from an authentication server. The router gives information of the router to a packet during joining check (Query) and transmits the packet to a layer 2 switch. The layer 2 switch can grasp, by receiving the joining checks which group address the user terminal can join. The layer 2 switch can perform delivery control involving authentication. The layer 2 switch collects information necessary for accounting such as delivery start and end times and traffic and transmits the information to the router. The router creates accounting information on the basis of the information and transmits the accounting information to the accounting server. | 09-25-2008 |
| 20080310416 | VLAN SERVER - A method for processing data received from at least one of VLANs, the method including: obtaining, based on a VLAN tag included in a MAC header of a MAC frame received from the VLAN and a first destination IP address included in an IP header of the MAC frame, a second destination IP address, changing the first destination IP address of the IP header to the second destination IP address, and generating an IP packet by deleting the MAC header from the MAC frame. | 12-18-2008 |
| 20090067429 | PACKET FORWARDING APPARATUS SUITABLE FOR FORWARDING EXTENDED FRAME - A packet forwarding apparatus (L | 03-12-2009 |
| 20090070863 | ACCESS SERVER AND CONNECTION RESTRICTION METHOD - The access server receives an authentication packet including an authentication result, a port change setting information, a port change time, a filtering setting information and a filtering time from the authentication server. The access server stores the respective information in the authentication packet into a memory. The access server refers to the memory, and in the case where the port change setting information on an arbitrary user identifier is set to perform port change, when it becomes the port change time, the access server changes the output destination of a packet from a user terminal to, for example, a proxy server B from a proxy server A. Besides, in the case where the filtering setting information on an arbitrary user identifier is set to perform filtering, when it becomes the filtering start time, the access server performs filtering on the port to which the user terminal is connected. | 03-12-2009 |
| 20090080427 | MULTICAST ACCOUNTING CONTROL SYSTEM AND BROADBAND ACCESS SERVER - A listening-or-viewing charge is differentiated with bit rates depending on distributed programs. A broadband access server for holding user channels by PPP and replicating and transferring multicast packets have a counter for counting the number of distributed multicast packets and the number of distributed bytes at each multicast group address. The counter values (byte counts and packet counts) when a user joins a multicast group and when the user leaves the multicast group and a multicast session ID containing a PPP user ID and a multicast group address are sent to a multicast accounting radius server. The multicast accounting server provides an accounting on a basis of the byte counts, the packet counts, or a bit rate. | 03-26-2009 |
| 20090080889 | WDM TYPE PASSIVE OPTICAL NETWORK - In a WDM type PON system, each ONU comprises an optical transmitter capable to transmit optical signals with variable wavelengths, an optical signal receiving filter variable its receiving wavelength, and a control unit. An OLT selects in response to a wavelength allocation request from each ONU, a transmitting wavelength and a receiving wavelength out of currently free wavelengths and allocates these wavelengths to the requester ONT. The control unit of the ONU switches the transmitting wavelength of the optical transmitter and the receiving wavelength of the optical signal receiving filter to the wavelengths specified in a response message from the OLT and starts data communication. | 03-26-2009 |
| 20090092051 | PACKET TRANSFER SYSTEM - A gateway selector and a load distribution management device are provided between a user terminal and plural gateway devices. Of response packets received from the plural gateway devices, the gateway selector selects a response packet from a gateway device with a higher priority, according to the priority in a load distribution management table of the load distribution management device. Then, the gateway selector transfers the selected response packet to the user terminal, while discarding a response packet from another gateway device. In this way, it is possible to construct a redundant configuration of the gateway devices, independent of user terminal implementation. | 04-09-2009 |
| 20090110400 | WDM TYPE PASSIVE OPTICAL NETWORK - In a WDM type PON system, each ONU comprises an optical transmitter capable to transmit optical signals with variable wavelengths, an optical signal receiving filter variable its receiving wavelength, and a control unit. An OLT selects in response to a wavelength allocation request from each ONU, a transmitting wavelength and a receiving wavelength out of currently free wavelengths and allocates these wavelengths to the requester ONT. The control unit of the ONU switches the transmitting wavelength of the optical transmitter and the receiving wavelength of the optical signal receiving filter to the wavelengths specified in a response message from the OLT and starts data communication. | 04-30-2009 |
| 20100135280 | TELECOMMUNICATIONS SYSTEM AND TELECOMMUNICATIONS MANAGEMENT APPARATUS - The migration of telephone services by a telecommunications carrier from a PSTN to an IP network entails that problem that when it is not possible for some telephone subscribers to migrate to the IP network due to the types of their telephone lines or services they subscribe to, other subscribers also cannot migrate to the IP network until the former subscribers migrate to the IP network. | 06-03-2010 |
| 20100146096 | COMMUNICATION SYSTEM - A communication system controls connection to the interface, such as an IP line to which a subscriber terminal connects, according to the information in the tables in which information is registered and updated, wherein the registered and updated information includes information as to which line type, ISDN line or analog line, is used and as to which high way (HW) of a time-division switch (TSW) of a media gateway (management device) is selected for providing TSs (timeslots) for use in the connection, as well as subscriber information on services for which a subscriber contracts. | 06-10-2010 |
| 20100158008 | SWITCHING EXCHANGE - In a network system where a switching exchange accommodating an ISDN provides TDMoIP packet communication over an IP network, measures for packet loss prevention need to be taken during a period during which a TDM service is packet-transferred over the IP network. When a transmitting-end switching exchange in the above network system multiplexes TDM data, the present invention varies the degree of multiplicity in accordance with the delay in the IP network and the type of data. | 06-24-2010 |
| 20100312903 | COMMUNICATION SYSTEM, SESSION CONTROL MANAGEMENT SERVER AND SESSION CONTROL METHOD - To implement a calling party number anonymous service in an IP telephone service. An IP telephone terminal adds the setting of requesting a Pool IP address along with a normal IP address to a REGISTER message directed from the IP telephone terminal to an SIP server and requests the assignment of a temporary IP address if receiving an anonymous call incoming request message. The SIP server makes the temporary assignment of the Pool IP address and notifies the temporary IP address to a called party IP telephone terminal by adding it to an INVITE message, if the called IP address of the anonymous call incoming request INVITE message is the IP telephone terminal. The called IP telephone terminal receiving the assignment of the temporary IP address can make the connection, communication and disconnection processes employing the temporary IP address as the self IP address in the following dialog. | 12-09-2010 |
| 20110129078 | SELECTIVE RESPONSE UNIT - In a telephone network, an incoming call is once received using an automatic voice response. A ring tone is not played immediately after the incoming. In the automatic response, an authorization sound that is necessary every time connection to the caller is made is generated each time by superimposing a background sound on a random number generated through random number generation processing. The caller is notified of the authorization sound. A ring tone is played in response to only incoming calls that return a valid response value, and not played in response to incoming calls that return an invalid response value. | 06-02-2011 |
