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Connection to the PBX

dathaide
Beginner
Beginner

hi

I am working on connecting a 3745 gateway router to the PBX to do Voip for 10 new locations. What card do i need to purchase to interface the Lucent phone switch. What are my options?

thanks

1 REPLY 1

pacameron
Enthusiast
Enthusiast

Depends on the PBX and what interface cards it supports. For analogue inbterfaces, you can use FXO, FXS or E&M. E&M is preferable as it was designed for interfacing between PBXs and other devices and gives answer and disconnect supervision.

For digital, you can use CAS or PRI. PRI is preferable as it is a stateful protocol and it gives an indication of the progress of the call, full answer and disconnect indication and call clearing codes.

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