Cisco Cisco TelePresence Video Communication Server Expressway

Appendix 10 – IP port numbers

Cisco VCS Deployment Guide: Microsoft OCS 2007 R2, Lync 2010 and Cisco VCS X7.1

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Appendix 10 – IP port numbers

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 OCS/Lync and MOC/Lync client, or configuration on VCS.

IP port numbers used between B2BUA and OCS/Lync

Protocol

B2BUA IP port

Lync / OCS IP port

Signaling to OCS/Lync Server

TLS

65072

5061
(OCS/Lync signaling destination port)

Signaling from OCS/Lync Server

TLS

65072

OCS/Lync ephemeral port

Presence to OCS/Lync Server

TLS

10011

5061
(OCS/Lync signaling destination port)

Presence from OCS/Lync Server

TLS

10011

OCS/Lync ephemeral port

Media

UDP

56000 to 57000

MOC/Lync client media ports

IP port numbers used between B2BUA and VCS
Expressway hosting the TURN server

Protocol

B2BUA IP port

VCS Expressway IP port

All communications

UDP

56000 to 57000

3478

Ensure that the firewall is opened to allow the data traffic through from B2BUA to Expressway.

IP port numbers used with external Lync client

Protocol

Edge server

Lync client

SIP/MTLS used between Lync
Client and Edge server for signaling
(including any ICE messaging to the
Edge Server)

TCP

5061

SIP/TLS

TCP

443

STUN

UDP

3478

UDP Media

UDB

50000-59999

1024-65535

TCP Media

TCP

50000-59999

1024-65535

Protocol

Lync client /
Edge server

VCS Expressway

ICE messaging (STUN / TURN) if
media is sent via the Expressway

UDP

3478

UDP media if it is sent via the
Expressway

UDP

1024-65535

60000-61799