Administrator’s Guide for Polycom QDX 6000 Systems
2-5
2 Configure these settings on the Quality of Service screen:
Setting Description
Type of
Service
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.
Type of
Service Value
Specifies the IP Precedence or Diffserv value for Video, Audio,
and Far End Camera Control.
Enable LPR
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.
3 Select
and configure these settings on the Bandwidth screen:
Setting Description
Maximum
Transmit
Bandwidth
Specifies the maximum transmit line speed between 64 kbps
and 4096 kbps.
Maximum Receive
Bandwidth
Specifies the maximum receive line speed between 64 kbps
and 4096 kbps.
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 Go to System > Admin Settings > Network > IP > Firewall.
