Chapter 4 Tutorials
• The connection with VPI/VCI, 0/35, is dedicated for general data transmission.
Figure 11 Example for Multiple WAN Connections
4.10 Multiple PVCs with QoS
This tutorial is only applicable for an ISP engineer.
An ISP may configure multiple PVCs for seperating different subscriber application traffic. This helps to record traffic statistics or calculate service charges. In addition, the ISP can also apply different QoS according to the application importance and whether the application is
In the following figure, the ZyXEL Device is configured to transmit two types of traffic, VoIP using SIP and general data using 0/33 and 0/35 PVCs respectively. Because voice traffic is considered to transmit continuously but not for general data, this tutorial uses Constant Bit Rate (CBR) for VoIP and Unspecified Bit Rate (UBR) for general data
port 4
port 1~3
PVC: 0/35
PVC: 0/33
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This tutorial also dedicates the ZyXEL Device LAN port 4 for voice and ports 1~3 for general data traffic.
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