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Administrator’s Guide for the VSX Series
Appendix - 8
Port Usage
The tables in this section list VSX system port usage. You may need this
information when you configure your network equipment for video
conferencing.
The following table shows IP port usage.
Port Function
80-Static TCP HTTP interface (optional)
389-Static TCP ILS registration (LDAP)
1503-Static TCP T.120
1718-Static TCP Gatekeeper discovery (must be bidirectional)
1719-Static TCP Gatekeeper RAS (must be bidirectional)
1720-Static TCP H.323 call setup (must be bidirectional)
1731-Static TCP Audio call control (must be bidirectional)
5060-Static UDP/TCP SIP call setup (must be bidirectional)
8080-Static TCP HTTP server push (optional)
1024-65535 Dynamic TCP H245. Can be set to “Fixed Ports” on
Polycom systems.
1024-65535 Dynamic UDP - RTP (video data). Can be set to “Fixed
Ports” on Polycom systems.
1024-65535 Dynamic UDP - RTP (audio data). Can be set to “Fixed
Ports” on Polycom systems.
1024-65535 Dynamic UDP - RTCP (control information). Can be set to
“Fixed Ports” on Polycom systems.