Cisco Cisco TelePresence Video Communication Server Expressway
Port Reference
The port numbers listed below are the default port values. The values used in a real deployment may vary if they have
been modified, for example, by changes of registry settings or through group policy, on Lync and Lync client, or
configuration on VCS (Applications > B2BUA).
been modified, for example, by changes of registry settings or through group policy, on Lync and Lync client, or
configuration on VCS (Applications > B2BUA).
Purpose
Protocol
IP port
Lync IP port
Signaling to Lync Server
TLS
65072
5061 (Lync signaling destination
port)
port)
Signaling from Lync Server
TLS
65072
Lync ephemeral port
Presence to Lync Server
TLS
10011
5061 (Lync signaling destination
port)
port)
Presence from Lync Server
TLS
10011
Lync ephemeral port
Media
(The Lync B2BUA application should run
on a separate "Gateway" VCS and so
this range should not conflict with the
standard traversal media port range)
on a separate "Gateway" VCS and so
this range should not conflict with the
standard traversal media port range)
Note:
The VCS does not forward
DSCP information that it receives in
media streams.
media streams.
UDP
56000 to 57000
Each call can use
up to 18 ports if
you Enable RDP
Transcoding for
this B2BUA.
up to 18 ports if
you Enable RDP
Transcoding for
this B2BUA.
Increase this range
if you see "Media
port pool
exhausted"
warnings.
if you see "Media
port pool
exhausted"
warnings.
Lync client media ports
Desktop shares from Lync clients to
B2BUA
B2BUA
TCP
56000 to 57000
Lync client RDP ports
Table 12 Between B2BUA and Lync
Purpose
Protocol
B2BUA port
VCS IP port
Internal communications with VCS
application
application
TLS
65070
SIP TCP outbound port on VCS
Transcoded desktop shares from B2BUA
to internal recipients
to internal recipients
UDP
56000 to 57000
Recipient of media is dependent
on deployment and called alias;
eg. endpoint, TelePresence
Server, VCS Control
on deployment and called alias;
eg. endpoint, TelePresence
Server, VCS Control
Table 13 Between B2BUA and Internal Video Network
46
Cisco VCS and Microsoft Lync Deployment Guide