Voice Vlan - ZyXEL Communications XS3800-28 User Manual

Figure 125 Protocol Based VLAN Configuration Example
To add more ports to this protocol based VLAN.
Click the index number of the protocol based VLAN entry. Click 1.
1
Change the value in the Port field to the next port you want to add.
2
Click Add.
3

9.10 Voice VLAN

Voice VLAN is a VLAN that is specifically allocated for voice traffic. It ensures that the sound quality of an
IP phone is preserved from deteriorating when the data traffic on the Switch ports is high. It groups the
voice traffic with defined priority into an assigned VLAN which enables the separation of voice and
data traffic coming onto the Switch port.
The Switch can determine whether a received packet is
• an untagged voice packet when the incoming port is a fixed port for voice VLAN.
• a tagged voice packet when the incoming port and VLAN tag belongs to a voice VLAN.
It then checks the source packet's MAC address against an OUI list. If a match is found, the packet is
considered as a voice packet.
You can set priority level to the Voice VLAN and add MAC address of IP phones from specific
manufacturers by using its ID from the Organizationally Unique Identifiers (OUI).
Click the Voice VLAN Setup link in the VLAN Configuration screen to display the configuration screen as
shown.
Chapter 9 VLAN
EXAMPLE
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