Lucent TN464F Universal DS1 INTFC 24/32 V18 Interface Circuit Module Card TN464F V18.Lucent Model Number: TN464FLucent Part Number: TN464F V18Board Model Number: TN464E SER 4Compatible Part Numbers: 107214702 847306438 ISS 1Specifications:- Supports 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 protocol- All versions also support ISDN-PRI connectivity- TN464F and later suffix is required to communicate with Conversant.