FeaturesSupports DS1 Rate (24 Digital Channels) and E1 Rate (32 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 protocolAll versions also support ISDN-PRI connectivityTN2464CP provides echo cancellation and downloadable firmware capabilities for Definity Release 9 and laterTN2464CP backwards compatible with earlier Definity ReleasesFirmware download feature requires use of the TN799C C-LAN interfaceIncludes Refurbished
