T1 CAS with Telco H323

Unanswered Question
Jan 5th, 2009

I am attemtping to turn up a T1 CAS E&M circuit with telco. I am running CUCM 6.1. and my router is a 2811. Does anyone have a sample IOS config I can use as a reference? Thanks in advance.

I have this problem too.
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Nicholas Matthews Mon, 01/05/2009 - 13:28

controller T1 0/1/0


clock source internal

ds0-group 0 timeslots 1-24 type e&m-wink-start

dial-peer voice 1 pots

port 0/1/0:0


incoming called-number .

dial-peer voice 2 pots

destination-pattern 9.T

port 0/1/0:0

The rest will depend on if you're using SIP, MGCP, or H323. MGCP will look considerably different, but SIP/H323 would add this:

dial-peer voice 3 voip

session target ipv4:

destination-pattern 45...

codec g711ulaw

no vad

if SIP




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