Cisco Cisco TelePresence Video Communication Server Expressway
27
B2BUA
SIP B2BUA (for calls to Microsoft OCS/Lync devices)
H.323: internal
FEP
a
FEP b
FEP c
Edge Server
Active
Directory
Microsoft
OCS / Lync
Cisco
VCS
Expressway
MOC / Lync client
Video endpoint
Hardware
Load
Balancer
Cisco TelePresence
Advanced Media Gateway
TURN
server
server
Service / function
Default port on B2BUA
Media
56000:57000 UDP
OCS/Lync device signaling
65072 TLS
Transcoder device signaling
65080 TLS
OCS/Lync presence communications
10011 TLS
Service / function
Default port on remote system
OCS/Lync device signaling
5061 TLS
TURN server signaling/media
3478 UDP
Transcoder device signaling
5061 TLS
Cisco “OCS/Lync
gateway” VCS Control
Cisco VCS
Control