Cisco Cisco Telepresence Multipoint Switch Release 1.9

Condition: C-series/MX-series/SX-series endpoints. One or more endpoints limited to 720p. 
Unified CM 9.1.2 and Unified CM 8.6.2 or 9.0. 

1. INVITE from Unified CM/CTMS to all endpoints - call is established with in/out 720p for all 
endpoints 

2. After 15 minutes, the session refresh from Unified CM comes in with a maximum mbps of 243000 
(1080p30). B and C answer with an mbps 245000 but A answers with 108000.

3. Since CTMS is not downspeeding B and C, they will transmit at 1080p30 to A, which will fail to 
decode (since it can receive a maximum of 720p30). A generates GDR requests to the active speaker, 
but will still receive 1080p30 video, so no video will be displayed.

Does not happen when one or more CTS endpoints are in the call since MUX will downspeed all 
endpoints to the correct bandwidth/resolution.

Workaround: Add a CTS system to the call or make sure all C-series/MX-series/SX-series 
endpoints have the same maximum capability (720p30 or 1080p30).

The following caveats were fixed in CTMS release 1.9.1:

: CTMS Administrative UI becomes slow or inaccessible when there is meeting going on 

after system has been running for a while.

: 'Meeting Manager' user is logged out when accessing 'Media Snapshot' on active meeting.

: WebEx uses one CTMS segment even though it has not joined the meeting.

: Active speaker video switching from MOVI taking more than 20 seconds in a multipoint 

call.

: CLI Event Control entry source command does not work as expected.

: When a CTS endpoint with 2048-bit security certificates tries to join a secure CTMS 

conference, it will be dropped.

: Boardroom feature does not work if only one CTS 3000 is in a meeting.

: On phone UI, Meeting CTRL > View Control > Room or Speaker Button seems to be Stuck 

and does not function as expected.

: Calls sometime gets dropped because CTMS (ConfMgr) is trying to send REINVITE to 

an endpoint while CTMS (CCS) is still processing REINVITE from the endpoint.

: EX90 endpoint user audio can be heard, but no video appears on a CTS-500-32 in a 

scheduled CTMS meeting.

: Importing CTMS configuration file does not work.

: Participants in a TelePresence call hear reverberation in the audio coming from another 

participating endpoint.