Avaya TN464GP Universal DS1/PRI Interface, part #TN464GP
The TN464GP supports DS1 Rate (twenty-four digital channels) and E1 Rate (thirty-two digital channels). All versions support CO, TIE, DID and OPS (Off - Premises Stations) port types using the robbed signal protocol, proprietary bit-oriented signaling, (BOS) 24th channel signaling protocol, and the DMI-BOS 24th channel signaling protocol. All versions also support ISDN-PRI connectivity.
The TN464GP provides echo cancellation and downloadable firmware capabilities for Definity Release 9 and later. The TN464GP is backwards compatible with earlier Definity Releases. Firmware download feature requires use of the TN799C C-LAN interface.