The IP400 PRI 24 T1 Expansion Kit for the IP403, IP406 and IP412 office platforms provides for one T1/PRI port. It features digital T1 and supports DNIS and ANI (number only).
For use with Avaya IP403, IP406 and IP412See other products in some related categories (click to browse):
Telephony, PBX & VoIP > Phone Systems > Business Phone Systems by Brand > Avaya IP Office IP PBX Phone Systems