[cisco-voip] Callmanager and Nortel

[Aman Chugh]

I have integration between Nortel CS 1000 running release 5 and CallManager
4.2 sr4 , I am able to make calls between Nortel and Cisco Ip phones.  The
issue occurs when ever a call between two nortel phones is transferred to a
cisco IP phone over the SIP trunk , I have no audio between Cisco and
Nortel. I am using G711 codec over the SIP trunk. The Cisco IP Phone rings
and the call is established but have no audio either side. I can see the SIP
invite message and ACK messages in the CCM trace but not sure what I am
missing here.

TIA

Aman
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