User manual

APS User Manual
189
1.2.12 Voice VLAN
The Voice VLAN function is used for networks where both data and voice traffic are running on the
same network. By using a dedicated VLAN for voice traffic it allows the administrator to prioritize
this traffic to ensure voice quality is kept to an optimum level.
1.2.12-1 Configuration
This section is used to configure the Voice VLAN settings on the APS Series switches.
The voice VLAN feature enables access ports to carry IP voice traffic from an IP phone. When the
switch is connected to an IP Phone, the phone can send voice traffic with Layer 3 IP precedence and
Layer 2 class of service (CoS) values. Because the sound quality of an IP phone call can deteriorate if
the data is unevenly sent, the switch supports quality of service (QoS) based on IEEE 802.1p CoS.
QoS uses classification and scheduling to send network traffic from the switch in a predictable
manner.
The Voice VLAN QoS functionality is only applicable to IP Phones that support tagging of traffic with
IP Precedence or CoS QoS values. Most IP Phones will support this feature and must be configured to
do so correctly.
Web Interface
To configure the Voice VLAN settings via the Web Interface:
1. Click Configuration, Voice VLAN and Configuration.
2. Enable the Voice VLAN from the drop box labelled Mode.
3. Specify the appropriate VLAN ID, Aging Time and Traffic Class.
4. Configure the individual port settings as required.
5. Click the Apply button to save your changes or the Reset button to revert to previous
settings.