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Cisco Bug: CSCuo76923 - Conductor modify a=label attribute line

Last Modified

Feb 12, 2018

Products (1)

  • Cisco TelePresence Conductor

Known Affected Releases

XC2.3

Description (partial)

Symptom:
Conductor incorrectly modify a=lablel attribute line caused disable BFCP capability on conference call, therefore none of Endpoint able to initiate presentation/content share in conference call.

Conditions:
The call that Conductor receive the INVITE from call controller without a=content attribute line a part of 2nd video m=video section in SDP.
Example of call fail to negotiate BFCP
================================
m=video 16400 RTP/AVP 97 126
c=IN IP4 172.16.1.100
b=TIAS:4000000
a=rtpmap:97 H264/90000
a=fmtp:97
profile-level-id=428016;packetization-mode=0;max-mbps=108000;max-fs=3600
a=rtpmap:126 H264/90000
a=fmtp:126
profile-level-id=428016;packetization-mode=1;max-mbps=108000;max-fs=3600
a=label:12
================================
Example of call success to negotiate BFCP
================================
m=video 16400 RTP/AVP 97 126
c=IN IP4 172.16.1.100
b=TIAS:4000000
a=rtpmap:97 H264/90000
a=fmtp:97
profile-level-id=428016;packetization-mode=0;max-mbps=108000;max-fs=3600
a=rtpmap:126 H264/90000
a=fmtp:126
profile-level-id=428016;packetization-mode=1;max-mbps=108000;max-fs=3600
a=label:12
a=content:slides
================================
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