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Monday, February 22, 2010

How to enable 3 way calling using an FXS line on an H.323 gateway

We have an analog conference phone using an FXS port on a H.323 gateway, the analog phone is not capable of 3 way calling right now. Before changing the gateway to MGCP we wanted to ask if its possible to have 3 way calling using an FXS line on an H.323 gateway. The number being used is currently set up as a route pattern in CUCM 7.1.

You will need to configure the dial-peer to be controlled by SCCP using stcapp. This allows the port to utilise the DSP chips on the gateway so that you can have 3-way conferencing.

Example config:

stcapp ccm-group 1

dial-peer voice 22 pots
description **Dial Peer for Main Conference Phone**
service stcapp
port 2/0/2

for stcapp, you need a minimum of 12.4(15)T

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