Quality Of Service And Firewalls - Polycom ViaVideo User Manual

Chapter 3
ViaVideo User's Guide
We recommend that you select line speeds that you know your
network can handle. If you are not sure which line speeds are best,
contact your network administrator.
ViaVideo provides ultra-low speeds, 80 and below, to provide for
connection over very low bandwidth networks, such as dial-up
modems. Although the low transfer rate results in blocky image
transmission, audio quality is not affected.

Quality of Service and Firewalls

In this screen, you can configure your quality of service, Network
Address Translator (NAT), and firewall options.
Use Fixed Ports
System is behind a NAT Alerts ViaVideo to use the IP address
System Information and Diagnostics
Specifies the fixed ports assigned to
ViaVideo when working with a firewall.
that appears in the NAT outside (WAN)
address field as its external IP address.
When using a Virtual Private Network
(VPN) for your network connection,
make sure that System is behind a
NAT is not selected.
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