Polycom 1 - Manual (Page 156)

Administrator’s Guide for Polycom HDX Systems
B - 2
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)
3601 TCP (Proprietary - data traffic) - Global directory data
5001 TCP/UDP People+Content IP
5060-Static TCP/UDP SIP call setup (must be bidirectional)
8080-Static TCP HTTP server push (optional)
Port Function