System information

Polycom® Unified Communications Deployment Guide for Cisco Environments
40
Troubleshooting
This section provides assistance in troubleshooting any issues you may have with Direct
Registration of Polycom RealPresence Systems with CUCM.
No video in calls between a Cisco endpoint and a Polycom endpoint
Possible Cause: CUCM regions settings do not allow for video.
Workaround: Check CUCM Regions settings. Determine the Device Pool associated with each
endpoint, and the corresponding Region assigned to the respective Device Pools. Once the
Regions are known, check the Region Relationships in the CUCM Region settings to confirm
the Max Video Call Bit Rate is set properly.
Cisco CTS endpoints cannot connect to the RMX
Possible Cause: The CUCM SIP trunk to the RMX is configured as OffNet.
Workaround: Check CUCM Trunk settings.
In the CUCM SIP Trunk settings, confirm the Call Classification setting for the trunk is set to
OnNet. Cisco CTS endpoints will not connect to endpoints classified as OffNet.
Polycom endpoints are not registering to CUCM
Possible Cause: The assigned Directory Number is already in use on another device.
Workaround: Check the Directory Number and assign a new extension if shared.
Ensure the Directory Number assigned to the 3
rd
Party Advanced SIP Endpoint added to CUCM
for the Polycom endpoint is not ‘shared’ with any other devices. If Partitions are included in your
CUCM deployment, ensure the Directory Number is unique within its Partition.
Cisco endpoint shows “No bandwidth available” and does not connect to a
Polycom endpoint
Possible Cause: CUCM Locations-based Call Admission Control (CAC) does not have proper
video bandwidth allocated.
Workaround: Allocate a proper amount of video bandwidth.
If the two devices are configured for different Locations within CUCM, under the Locations
settings, confirm that there is adequate Video Bandwidth allocated to allow for the call.