Voice Vlans - D-Link DWC-2000 User Manual

Section 5 - Advanced Network Configuration
Path: Network > VLAN > Advanced VLAN > Voice VLAN
The voice VLAN feature enables controller ports to carry voice traffic with defined settings so that voice and data
traffic are separated when coming onto the port. A voice VLAN ensures that the sound quality of an IP phone is
safeguarded from deterioration when data traffic on the port is high.
The inherent isolation provided by VLANs ensures that inter‐VLAN traffic is under management control and that
network‐attached clients cannot initiate a direct attack on voice components. A QoS protocol based on the
IEEE 802.1P class‐of‐service (CoS) protocol uses classification and scheduling to send network traffic from the
controller in a predictable manner. The system uses the source MAC of the traffic traveling through the port to
identify the IP phone data flow.
Voice VLAN is enabled per‐port basis. A port can participate only in one voice VLAN at a time. The Voice VLAN
feature is disabled by default.
1. Go to Network > VLAN > Advanced VLAN > Voice VLAN tab.
2. Toggle Activate Voice VLAN to ON and click Save.
3. Click Add New Voice VLAN.
4. Select the interface and Voice VLAN mode.
• VLAN: The voice VLAN packets are uniquely identified by a number you assign. All voice traffic
carries this VLAN ID to distinguish it from other data traffic which is assigned the port's default
VLAN ID. However, voice traffic is not prioritized differently than other traffic.
• Dot1q: This parameter is set by the VoIP device for all voice traffic to distinguish voice data from
other traffic. All other traffic is assigned the port's default priority.
5. Click Save.
D-Link DWC-2000 User Manual

Voice VLANs

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