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Any configuration changes made locally on the switch won't be synchronized with Sophos Central. We recommend making changes from the Sophos Central control panel instead.

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Voice VLAN

Enhance your Voice over IP (VoIP) service by configuring ports to carry IP voice traffic from IP phones on a specific VLAN. Voice VLAN provides QoS to VoIP, ensuring that the quality of the call does not deteriorate if the IP traffic is received erratically or unevenly.

Global settings

Option Description
Voice VLAN State Select Enabled or Disabled for Voice VLAN on the switch.
Voice VLAN ID Sets the voice VLAN ID for the network. Only one voice VLAN is supported on the switch.
VLAN Priority tag Sets the voice VLAN priority tag for the network.
DSCP Sets the DSCP (Differentiated Services Code Point).
802.1p Remark Enable this function to have outgoing voice traffic to be marked with the selected CoS value.
Remark CoS/802.1p Defines a service priority for traffic on the voice VLAN. The priority of any received VoIP packet is overwritten with the new priority when the voice VLAN feature is active on a port. (Range: 0 to 7; Default: 6)
Aging Time The aging time is used to remove a port from voice VLAN if the port is an automatic VLAN member. When the last voice device stops sending traffic and the MAC address of this voice device is aged out, the voice VLAN aging timer will be started. The port will be removed from the voice VLAN after the expiration of the voice VLAN aging timer. If the voice traffic resumes during the aging time, the aging timer will be reset and stop. The range for the aging time is from 30 to 65535 minutes. The default is 1440 minutes.

Click Apply to update the system settings.

OUI Settings

The switch determines whether a received packet is a voice packet by checking its source MAC address. VoIP traffic has a pre-configured Organizationally Unique Identifier (OUI) prefix in the source MAC address. You can manually add specific manufacturer's MAC addresses and descriptions to the OUI table. All traffic received on the voice VLAN ports from a specific IP phone with a listed OUI is forwarded on the voice VLAN.

Option Description
Index Displays the VoIP sequence ID.
OUI Address This is the globally unique ID assigned to a vendor by the IEEE to identify VoIP equipment.
Description Displays the ID of the VoIP equipment vendor.

To configure the OUI settings, click the Edit button to re-configure the specific entry. Click the Delete button to remove the specific entry and click the Add button to create a new OUI entry.

Click the Apply button to accept the changes or the Cancel button to discard them.

Port settings

Enhance your VoIP service further by configuring ports to carry IP voice traffic from IP phones on a specific VLAN. Voice VLAN provides QoS to VoIP, ensuring that the quality of voice traffic does not deteriorate if the traffic is received unevenly.

Option Description
Port Displays the port to which the voice VLAN settings are applied.
State Select Enabled to enhance VoIP quality on the selected port. The default is Disabled.
CoS Mode Select Src, or All from the list.
Src: Src QoS attributes are applied to packets with OUIs in the source MAC address.
All: All QoS attributes are applied to packets that are classified to the Voice VLAN.
Operate Status Displays the operating status for the voice VLAN on the selected port.

Click Apply to update the system settings.