Configuring The System For Use With A Firewall Or Nat - Polycom QDX 6000 Administrator's Manual

2
Setting
Type of
Service
Type of
Service Value
Enable LPR
3
Setting
Maximum
Transmit
Bandwidth
Maximum Receive
Bandwidth

Configuring the System for Use with a Firewall or NAT

A firewall protects an organization's IP network by controlling data traffic
from outside the network. Unless the firewall is designed to work with H.323
video conferencing equipment, you must configure the system and the
firewall to allow video conferencing traffic to pass in and out of the network.
Firewall Settings
Network Address Translation (NAT) network environments use private
internal IP addresses for devices within the network, while using one
external IP address to allow devices on the LAN to communicate with other
devices outside the LAN. If your system is connected to a LAN that uses a
NAT, you will need to enter the NAT Public (WAN) Address so that your
system can communicate outside the LAN.
To set up the system to work with a firewall or NAT:
1
Configure these settings on the Quality of Service screen:
Description
Specifies your service type and lets you choose how to set the
priority of IP packets sent to the system for video, audio, and
far-end camera control. The priority of audio and video packets
you set here must be the same as the corresponding settings on
the router.

IP Precedence - Represents the priority of IP packets sent to
the system. The value can be between 0 and 5. If this setting is
selected, enter the value in the Type of Service Value field.

DiffServ - Represents a priority level between 0 and 63. If this
setting is selected, enter the value in the Type of Service
Value field.
Specifies the IP Precedence or Diffserv value for Video, Audio,
and Far End Camera Control.
Lets you specify whether to use Polycom Lost Packet
Recovery™ (LPR™) for calls.
This option is enabled by default. The LPR feature will be
enabled to ensure the picture effect at the endpoint when a
packet is lost in network transmission.
Select and configure these settings on the Bandwidth screen:
Description
Specifies the maximum transmit line speed between 64 kbps
and 4096 kbps.
Specifies the maximum receive line speed between 64 kbps
and 4096 kbps.
Go to System > Admin Settings > Network > IP > Firewall.
Administrator's Guide for Polycom QDX 6000 Systems
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