Quick view TN747B 8-Port Central Office Trunk Circuit Card CALL 888-832-4789 The TN747B has eight ports for loop-start or ground-start CO, foreign exchange (FX), and Wide Area Telecommunications (WATS) trunks. Each port has Tip and Ring signal leads. A port can be connected... Compare
Quick view TN746B 16-Port Analog Circuit Pack CALL 888-832-4789 The TN746B supports on-premises (in-building) wiring with either DTMF or rotary dialing and with or without the LED and neon message waiting indicators. The TN746B supports off-premises wiring... Compare
Quick view TN746 16-Port Analog Circuit Pack CALL 888-832-4789 The TN746 (in-building only) meets the needs of most analog line applications requiring a single voice terminal. LED message waiting indicators are not supported off-premises. Each port supports one... Compare
Quick view TN744C Call Classifier CALL 888-832-4789 The TN744C contains eight ports of tone detection on the Time Division Multiplexing (TDM) bus that function the same as the TN2182. The difference is the TN744C does not support call progress, tone... Compare
Quick view TN742 8-Port Analog Line Circuit Pack CALL 888-832-4789 The TN742 has 16 ports each. Each port has Tip and Ring signal leads. The TN742 supports on-premises (in-building) or off-premises wiring (out-ofbuilding only with AT&T-certified protection... Compare
Quick view TN556D ISDN-BRI 4-Wire S/T-NT Interface (12-Ports) CALL 888-832-4789 Provides 12-Ports connecting to ISDN-BRI terminals Each port has TXT, TXR, PXT, and PXR signal leads Up to 8 ports can be used for adjunct switch application interface (ASAI) links Each port operates... Compare
Quick view TN556B ISDN-BRI 4-Wire Interface CALL 888-832-4789 The TN556 has 12 ports connecting to ISDN-BRI terminals. Each port has TXT, TXR, PXT, and PXR signal leads. Up to eight ports can be used for ASAI links. Each port operates at 192 kbps per second and... Compare
Quick view Avaya TN464HP DS1/ISDN PRI Circuit Pack CALL 888-832-4789 Circuit-pack-level, administrable A- or Mu-Law companding CRC-4 generation and checking (E1 only) Stratum-3 clock capability ISDN-PRI T1 or E1 connectivity Line-out (LO) and line-in (LI) signal leads... Compare
Quick view TN464GP Universal DS1/PRI Interface (108826884) 36860 CALL 888-832-4789 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... Compare
Quick view TN464F Universal DS1 / ISDN PRI Interface CALL 888-832-4789 The TN464F and later suffix is required to communicate with CONVERSANT®. The TN464F and later is also required to obtain the enhanced maintenance capabilities of the Enhanced Integrated Channel... Compare
Quick view TN464D Universal DS1/ISDN Circuit Pack CALL 888-832-4789 The TN464C and later suffix circuit packs support DS1 rate (24 channel) and E1 rate (32 channel) digital facility connectivity. All TN464 suffixes support CO, TIE, DID, and OPS port types using... Compare
Quick view TN429D DIOD (Direct Inward Outward Dialing) 36113 CALL 888-832-4789 TN429D DIOD (Direct Inward Outward Dialing) (700394547) provides 8 ports for direct inward/outward dialing (DIOD) trunks Each port provides a 2-wire interface to the central office (CO) publich... Compare
Quick view TN570D Expansion Interface CALL 888-832-4789 The TN570 provides control channel applications and time-slot interchanging between the PPN and EPNs. It is used when ISDN-BRI and/or ASAI is connected in an EPN, and is always used in R7r or later... Compare
