If you select Media Termination Point Required the preferred codec option will no longer be ghosted and you can set the codec you want. Otherwise, if you do not select MTP Required then no SDP is offered and the far end SIP endpoint should include SDP in its reply and Call Manager will honor the first supported codec in the list. On May 11, 2010, at 10:38 AM, Alex Balashov wrote:
On 05/11/2010 01:36 PM, Kristian Kielhofner wrote:
Hello everyone,
I'm trying to build a sip trunk to a CallManager 7.1 system. The issue is every INVITE from the CallManager doesn't have an SDP (3pcc/RFC 3725). I'm looking for more of a standard INVITE w/SDP, 180/183, 200 type of dialog from the CallManager. I've tried digging through various docs, google, etc to no avail. Anyone have any hints?
So where does the SDP offer/answer negotiation happen? 200 OK offer / ACK answer?
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