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• IP phones send tagged voice traffic
Table 46 Required configurations on ports of different link types for them to support tagged voice
traffic
Port link type
Voice VLAN assignment mode
supported for tagged voice
traffic
Configuration requirements
Access N/A N/A
Trunk Automatic and manual
In automatic mode, the PVID of the port cannot
be the voice VLAN.
In manual mode, the PVID of the port cannot be
the voice VLAN. Configure the port to permit
packets of the voice VLAN to pass through.
Hybrid Automatic and manual
In automatic mode, the PVID of the port cannot
be the voice VLAN.
In manual mode, the PVID of the port cannot be
the voice VLAN. Configure the port to permit
packets of the voice VLAN to pass through
tagged.
• IP phones send untagged voice traffic
When IP phones send untagged voice traffic, you can only configure the voice traffic receiving
ports on the device to operate in manual voice VLAN assignment mode.
Table 47 Required configurations on ports of different link types for them to support tagged voice
traffic
Port link type
Voice VLAN assignment mode
supported for untagged voice
traffic
Configuration requirements
Access Manual
Configure the PVID of the port as the voice
VLAN.
Trunk Manual
Configure the PVID of the port as the voice
VLAN and assign the port to the voice VLAN.
If an IP phone sends tagged voice traffic and its access port is configured with 802.1X authentication and
guest VLAN, you must assign different VLAN IDs for the voice VLAN, the PVID of the access port, and the
802.1X guest VLAN for the functions to operate correctly.
If an IP phone sends untagged voice traffic, to deliver the voice VLAN function, you must configure the
PVID of the access port as the voice VLAN. As a result, 802.1X authentication does not take effect.
Security mode and normal mode of voice VLANs
Depending on their inbound packet filtering mechanisms, voice VLAN-enabled ports operate in one of
the following modes:
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