Polycom 1500/1800/2000/4000 manual Fixed Ports

IP Network Services

Settings in the Ports tab allow specific ports in the firewall to be allocated to multimedia conference calls.

The port range recommended by IANA (Internet Assigned Numbers Authority) is 49152 to 65535. The Collaboration Server uses this recommendation along with the number of licensed ports to calculate the port range.

11Modify the following fields:

Default IP Service – Conferencing – Ports Parameters

Field	Description
Fixed Ports	Leave this check box cleared if you are defining a Network Service for local calls
	that do not require configuring the firewall to accept calls from external entities.
	When cleared, the system uses the default port range and allocates 4 RTP and
	4 RTCP ports for media channels (Audio, Video, Content and FECC).
	Note: When ICE Environment is enabled, 8 additional ports are allocated to
	each call.
	Click this check box to manually define the port ranges or to limit the number of
	ports to be left open.

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