Cisco Cisco TelePresence Video Communication Server Expressway
Appendix 6: Media paths and license usage for
calls through B2BUA
calls through B2BUA
Lync client call to SIP video endpoint
For a call of this type:
n
Signaling flows through Lync, B2BUA, and VCS Control.
n
Media is connected directly between the Lync client and the B2BUA.
n
Media is connected directly between the internal video endpoint and the B2BUA (as the call is SIP to SIP).
n
Calls made in the opposite direction, internal video endpoint to Lync client use the same signaling and
media paths.
media paths.
n
Licenses:
l
1 non-traversal call license on VCS Control
l
1 non-traversal call license on “Lync gateway” VCS
Signaling
Media
Lync client call to H.323 video endpoint
For a call of this type:
n
Signaling flows through Lync, B2BUA, and VCS Control.
n
Media is connected directly between the Lync client and the B2BUA.
n
Media from the internal video endpoint flows through the VCS Control and is then connected directly to the
B2BUA.
B2BUA.
n
Calls made in the opposite direction, internal video endpoint to Lync client use the same signaling and
media paths.
media paths.
n
Licenses:
l
1 traversal call license on VCS Control
l
1 non-traversal call license on “Lync gateway” VCS
Cisco TelePresence Microsoft Lync and Cisco VCS Deployment Guide (X8.5)
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Appendix 6: Media paths and license usage for calls through B2BUA