Polycom RealPresence 1500 Administrator's Manual page 511

Default IP Service – Conferencing – Ports Parameters
Field
UDP Port from - to
If you do not specify an adequate port range, the system will accept the settings but will issue a
warning. Calls will be rejected when the Collaboration Server's ports are exceeded.
12 If required, click the QoS tab.
Polycom®, Inc.
Description
Displays the default settings for port numbers used for audio and video.
To modify the number of UDP ports:
• Enter the first and last port numbers in the range, and the range must be 1024
ports per media card.
• When ICE environment is enabled, the range must be 2048 ports per media
card.
IP Network Services
481