Polycom PVX Software Manual page 12

Internet and Intranet Calling with Polycom PVX 8.0.1
3. Select the Advanced tab.
4. Click the Firewall button.
5. On the Firewall page, enter the following information for each port in Table 1.
In this field... Do this...
Enabled Click this radio button.
Name Enter any unique identifier such as "H.323 call setup".
Action Select Allow.
Source Enter the following:
Interface: WAN
IP Range Start: *
IP Range End: (blank).
Destination Enter the following:
Interface: LAN
IP Range Start: The internal IP address that the NAT has
assigned to your computer.
IP Range End: (blank)
Protocol: TCP, UDP, or * for both
Port Range: The Port or the starting and ending value of the range
listed in Table 1.
Schedule Select Always or select a time for the port to be open.
6. When you have opened and assigned all of the ports listed in Table 1, review
the Firewall Rules list. Check that all of the ports are correct, enabled, and
assigned to the correct IP (internal) Address as shown in the following figure.
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