SIP Early Offer CUCM Trunk
SIP Early Offer CUCM Trunk Early offer means that the media negotiation parameters are sent as SDP inside the INVITE message (see below) Received: INVITE sip:0399167314@10.248.95.18;user=phone SIP/2.0 Max-Forwards: 69 Session-Expires: 3600;refresher=uac Min-SE: 600 Supported: timer, 100rel To: 0399167314 <sip:039xxxxxxx@10.248.95.18;user=phone> From: <sip:0396xxxxxx@10.248.39.148>;tag=3563846310-73199 Call-ID: 3657443-3563846310-73194@MSX02-KENT-SYD.comindico.com.au CSeq: 1 INVITE Allow: INVITE, BYE, OPTIONS, CANCEL, ACK, REGISTER, NOTIFY, INFO, REFER, SUBSCRIBE, PRACK, MESSAGE, PUBLISH Via: SIP/2.0/UDP 10.248.39.148:5060;branch=z9hG4bK571711401be254476c9b6c922cdfcb01 Contact: <sip:039xxxxxxx@10.248.39.148:5060> Call-Info: <sip:10.248.39.148>;method=”NOTIFY;Event=telephone-event;Duration=1000″ Content-Type: application/sdp Content-Length: 524 v=0 o=MSX02-KENT-SYD 1436627 0…
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