
P-2602H(W)(L)-DxA Series User’s Guide
The DSCP value determines the forwarding behavior, the PHB
11.10.3 VLAN
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.
11.10.4 SIP QoS Screen
Use this screen to maintain ToS and VLAN settings for the ZyXEL Device. To access this screen, click VoIP > SIP > QoS.
Figure 90 SIP > QoS
Each field is described in the following table.
Table 56 SIP > QoS
LABEL | DESCRIPTION |
|
|
SIP TOS Priority | Enter the priority for SIP voice transmissions. The ZyXEL Device creates Type of |
Setting | Service priority tags with this priority to voice traffic that it transmits. |
RTP TOS Priority | Enter the priority for RTP voice transmissions. The ZyXEL Device creates Type of |
Setting | Service priority tags with this priority to RTP traffic that it transmits. |
Voice VLAN ID | Select this if the ZyXEL Device has to be a member of a VLAN to communicate |
| with the SIP server. Ask your network administrator, if you are not sure. Enter the |
| VLAN ID provided by your network administrator in the field on the right. Your LAN |
| and gateway must be configured to use VLAN tags. |
| Otherwise, clear this field. |
|
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Chapter 11 Voice | 163 |