The Definity TN556D 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 at 192 kbps per second and has 2 B-channels and 1 D-channel

Requires a packet control circuit pack (TN778) when used in R6si systems or packet bus-equipped R6vs systems

Range of up to 3300 ft. maximum from the system to the voice terminal

Can connect 24 terminals where each terminal uses 1 B-channel and shares the D-channel

Compatible with Definity R7 or later

2 Year Warranty