| Configuring Network Settings | 74
Parameter Description Configuration Method
TCP Port Scope/
TCP Lowest Port—TCP Highest
Port
Configure the range of the TCP
ports.
Note: the default TCP port range
is from 50000 to 51000. The valid
value is from1024 to 65000.
SIP and H.323 calls share the
configured ports. If you change
this parameter, the system will
reboot to make the change take
effect.
Web user interface
Endpoint
CTP20
Quality of Service (QoS)
Video conferencing system is subject to the bandwidth and the delay. Therefore, the QoS is very important
for the network with limited bandwidth. QoS is a major issue in VoIP implementations, regarding how to
guarantee that packet traffic is not delayed or dropped due to interference from other lower priority traffic.
Your system supports the DiffServ model of QoS.
Audio QoS
The loss of audio packets, the delay and so on may cause poor audio quality. To solve this, you can
configure DSCP priority for the audio packets.
Video QoS
Some issues, such as the video packet loss and delay may cause the video images distorted and unclear. To
ensure acceptable visual quality for video, video packets emanated from the system should be configured
with a high transmission priority.
Data QoS
To ensure better presentation, data packets (PC content) emanated from the system should be configured
with a high transmission priority. DSCPs for audio, video and data packets can be specified respectively.
• Configuring QoS
Configuring QoS
Procedure
1. Do one of the following:
• On your web user interface, go to Network > Advanced > QoS.
• On your VCS:
On your VC880/VC800/VC500/PVT980/PVT950, go to More > Setting > Advanced > Advanced
Network > QoS.
On your VC200, go to More > Network > Wired Network > Advanced Network > QoS.
On your VP59, tap Setting > Advanced > Advanced Network > QoS.
• On your CTP20, tap Setting > Advanced > Advanced Network > QoS.
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