Yealink VC110, Руководство администратора

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Configuring Network
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To configure intelligent firewall traversal via the web user interface:
1. Click on Network->NAT/Firewall.
2. Select the desired value from the pull-down list of Intelligent Firewall Traversal.
3. Click Confirm to accept the change.
Quality of Service (QoS) is the ability to provide different priorities for different packets
in the network. This allows the transport of traffic with special requirements. QoS
guarantees are important for applications that require a fixed bit rate and are delay
sensitive when the network capacity is insufficient. There are four major QoS factors to
be considered when configuring a modern QoS implementation: bandwidth, delay,
jitter and loss.
QoS provides a better network service through the following features:

Supporting dedicated bandwidth

Improving loss characteristics

Avoiding and managing network congestion

Shaping network traffic

Setting traffic priorities across the network
The Best-Effort service is the default QoS model in the IP networks. It provides no
guarantees for data delivery, which means delay, jitter, packet loss and bandwidth
allocation are unpredictable. Differentiated Services (DiffServ or DS) is the most widely
used QoS model. It provides a simple and scalable mechanism for classifying and
managing network traffic and providing QoS on modern IP networks. Differentiated