Call Control
Conference Call Video Problem
This information applies to CSCup01790.
Cisco Unified Communications Manager allocates an audio only conference bridge when the initial leg is triggered from an audio capable phone to video capable phones through an Early Offer (EO) or Best Effort Early Offer (BEEO) trunk. This scenario disables video in a conference call, even when video-capable endpoints are connected. To avoid this problem, you must perform the following steps.
Procedure
Step 1 |
Set the Allocate Video Conference Bridge For Audio Only Conferences When The Video Conference Bridge Has Higher Priority service parameter to True. |
Step 2 |
In the MRGL list, set the video conference bridge with a higher priority than the audio conference bridge. |
SIP IPv6 Calls Fail When Using UDP
Cisco Unified Communications Manager does not support SIP IPv6 signaling over UDP where the MTU is greater than 1500. To ensure that calls do not fail, change the transport protocol to TCP.