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Cisco Bug: CSCuo12936 - Collab Edge TC endpoint call drops after 30 min

Last Modified

Feb 01, 2017

Products (1)

  • Cisco Unified Communications Manager (CallManager)

Known Affected Releases


Description (partial)

Call drop between endpoint and bridge through VCS after session fresh reInvite exchange over SIP ICT.

Initial call has multiple codecs negotiated. When refresh timer pops over SIP ICT, CUCM sends reInvite without "+multiple-codecs-in-ans" tag that results in single codec being negotiated. This codec change triggers unnecessary/additional offer/answer exchange across whole call path and results in conflict.
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