Cisco Bug: CSCup27824 - SDL Signaling delay may cause intermittent Rendezvous Call failures
Last Modified
Jul 03, 2017
Products (1)
- Cisco Unified Communications Manager (CallManager)
Known Affected Releases
10.5(1.10000.7) 8.6(2.22900.9)
Description (partial)
Symptom: Calls to a Rendezvous Conferencing resources may fail intermittently under load. The issue is seen when calls are sent in the following manner: Endpoint -> Leaf Cluster -> SME Cluster -> Conductor There are 2 issue here in Early offer trunk scenario: 1. Mid call Invite with new SDP received with LATM parameters is not processed properly in media layer which causes 200 Re-INVITE to be stuck. This is addressed with Media layer fix "CSCuq01973". 2. SDP in 18x/ 200 OK answer sent to A leg is new SDP received from Mid call offer instead of original SDP answer when there is delay or race condition in call-control Response signal and new offer received from B leg. Conditions: The issue is seen when calls are sent in the following manner: Endpoint -> Leaf Cluster -> SME Cluster -> Conductor The clusters have to be under load where the race condition is caused by delays in the SDL Signaling queue and "m=" line in SDP contains LATM codec.
Bug details contain sensitive information and therefore require a Cisco.com account to be viewed.
Bug Details Include
- Full Description (including symptoms, conditions and workarounds)
- Status
- Severity
- Known Fixed Releases
- Related Community Discussions
- Number of Related Support Cases