Cisco Bug: CSCsy81095 - Wrong CAC bandwidth allocated for IPv6 calls with SIP trunk and MTP/XCOD
Jul 06, 2017
- Cisco Unified Communications Manager (CallManager)
Known Affected Releases
Symptom: The bandwidth allocated by the locations-based call admission control (CAC) feature may be incorrect for calls over an IPv6-only SIP trunk when a Media Termination Point or transcoder are involved in the call. This could result in a location exhausting allocatable bandwidth before the physical bandwidth is exhausted. Conditions: For calls over IPv6-only SIP trunks requiring a different codec (for example, G.729) than those within a Cisco Unified Communications Manager cluster (for example G.711), a transcoder will be inserted between the originating phone and the terminating cluster. In this case, the Communications Manager will incorrectly subtract the bandwidth for a call using G.711 instead of the bandwidth for a call using G.729 from the available bandwidth defined for the trunk location.
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Bug Details Include
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