Cisco Cisco TelePresence Video Communication Server Expressway

Appendix 2 – Known interoperating capabilities 

 

SIP and H.323 endpoints can make calls via Cisco VCS Control to MOC clients registered to 
OCS. 

 

MOC clients registered to OCS can make calls to SIP and H.323 endpoints on Cisco VCS 
Control. 

If a voice call is made from a MOC client to a video endpoint registered to Cisco VCS Control and then 
the video button is selected to enhance the call to a video call, the video endpoint will correctly up-
speed to video. 

Note that: 

 

Endpoints must connect to the Cisco VCS using TCP not TLS, and must be in SIP mode. 

 

Interworking a MOC client to an H.323 endpoint, the call will only up-speed from voice to video if 
the up-speed request occurs before the endpoint sends a BRQ lowering the connection 
bandwidth. 

Endpoints can join OCS R2 MOC clients into an ad hoc conference using the Multiway™ feature. See 
the “Cisco VCS Multiway™ deployment guide”. 

The OCS Relay feature is able to run in a cluster of Cisco VCS peers from version X5. 
 

Cisco VCS Deployment Guide: Microsoft OCS 2007 R1 and R2 and Cisco VCS X5.2 

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