Datasheet

Internet and Intranet Calling with Polycom PVX 8.0.1
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communicate outside the network. NAT adds an extra level of security by effectively
masking the internal network behind a single external IP address.
PVX supports video calls behind a firewall. In order to run PVX through a network router
and firewall, you must open specific ports for video conferencing. You assign the open
ports to the internal IP address (as defined by NAT) of the computer running PVX. This
process is known as port forwarding or pinholing. This application note provides
procedures for port forwarding on the most common routers.
If you have firewall software installed on your computer in addition to the router firewall,
you may need to disable or configure the software. See the Testing and Troubleshooting
section of this document for more information.
Entering settings in the setup wizard
Enter this information in the setup wizard screens:
❑ NAT Detected dialog box: If the wizard asks whether to use the external WAN
address, click Yes.
❑ Select Your IP Address dialog box: If the wizard detects multiple addresses and asks
you to choose the recommended address, click OK.
❑ Network Setup dialog box: Select Use External (WAN) IP Address and select Use
Fixed Ports (3230 and 3235).
Verify that the External (WAN) IP Address is the correct number provided by your ISP.
Most routers list the external IP address on a router status page. If you need to change the
IP address, finish the wizard, start PVX, and click Setup > Network to open the
Network tab. Enter the correct External (WAN) IP Address and click OK.
Configuring PVX port forwarding
After you complete the wizard, you must configure ports in your router before you can
make calls with PVX.