Quick view TN794 Network Control/Packet Interface CALL 888-832-4789 Each port supports 1 voice terminal, such as 500 (rotary dial) and 2500 terminals (DTMF dial). LED and neon message waiting indicators are supported (a separate power supply is required for neon... Compare
Quick view TN778 Packet Control (R6 and earlier) CALL 888-832-4789 The TN778 interfaces the packet bus with the Switch Processing Element (SPE) and terminates LAPD links. The TN778 supports packet bus signaling for ISDN D-channel signaling for ASAI applications and... Compare
Quick view TN777B Network Controller (R6 and earlier) CALL 888-832-4789 The TN777B communicates control channel messages between the Processor circuit pack and the distributed network of port circuit packs on the Time Division Multiplexing (TDM) bus. The circuit pack... Compare
Quick view TN776 Expansion Interface (for R6 or earlier si) CALL 888-832-4789 The TN776 connected to the Time Division Multiplexing (TDM) bus in one Port Network (PN) is an interface between that PN and the TDM bus extended to another PN. The TN776 packages the TDM control... Compare
Quick view TN772 Duplication Interface CALL 888-832-4789 The TN772 selects the active processing element (control complex) in high reliability and critical reliability systems and coordinates the interchange of processing elements. The TN772 controls the... Compare
Quick view TN771D Maintenance Test Card CALL 888-832-4789 The TN771D performs maintenance functions. These functions include packet bus reconfiguration (allows diagnosis and correction of recoverable packet bus failures before the LAPD links fail) . LAPD... Compare
Quick view TN768 Tone Clock CALL 888-832-4789 The TN768 supplies timing, including Stratum 4 timing, to the Port Network (PN). It produces the following tones: call progress, touch tones, answer-back, and trunk transmission test. The TN768 has 2... Compare
