Polycom MGC Administrator Administrator's Manual page 27

The Port Number field, and the Automatic Discovery and Secured check
boxes, appear in the Add MCU dialog box.
The Port Number field identifies the MCU port to which the MGC Manager initially
connects. If the Automatic Discovery option is enabled, then after initially
connecting to the MCU, the system checks the system configuration file
(system.cfg) for the preferred port settings. The preferred port is defined in the
GENERAL section of the system.cfg file, in the PREFERRED_PORT flag. If the
preferred port differs from the currently connected port, then the system
disconnects and reconnects using the preferred port and replaces the Port
Number with the preferred port.
6. To manually define the Port Number, clear the Automatic Discovery
check box.
7. In the Port Number field, select the listening port number from the drop
down list. The default port number is 5001. The Internet Assigned
Numbers Authority (IANA) has assigned port number 1205 to MCUs In
new installations, it is recommended to select the IANA port (1205).
If you are upgrading an existing installation and you do not wish to
change the firewall configuration, use the default setting (5001).
To define a secured connection between the MGC Manager and the MCU, refer
to "Defining a Secured (SSL) Connection to the MCU" on page 2-10.
8. Click OK.
MGC Administrator's Guide
2-9