Chapter 11 Voice

Figure 89 DiffServ: Differentiated Service Field

DSCP

Unused

(6-bit)

(2-bit)

 

 

The DSCP value determines the forwarding behavior, the PHB (Per-Hop Behavior), that each packet gets across the DiffServ network. Based on the marking rule, different kinds of traffic can be marked for different priorities of forwarding. Resources can then be allocated according to the DSCP values and the configured policies.

11.3.3 VLAN Tagging

Virtual Local Area Network (VLAN) allows a physical network to be partitioned into multiple logical networks. Only stations within the same group can communicate with each other.

Your ZyXEL Device can add IEEE 802.1Q VLAN ID tags to voice frames that it sends to the network. This allows the ZyXEL Device to communicate with a SIP server that is a member of the same VLAN group. Some ISPs use the VLAN tag to identify voice traffic and give it priority over other traffic.

11.4 SIP Settings Screen

Use this screen to maintain basic information about each SIP account. You can also enable and disable each SIP account. To access this screen, click VoIP > SIP > SIP Settings.

Figure 90 SIP > SIP Settings

 

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P-2602H(W)(L)-DxA User’s Guide