Voice End-Points

To have a voice VLAN work properly, the voice devices, such as a Cisco phones and VoIP endpoints, must be assigned to the voice VLAN where it sends and receives its voice traffic. Some of the possible scenarios are as follows:

The switch expects the attaching voice devices to send voice VLAN, tagged packets. On ports where the voice VLAN is also the native VLAN, voice VLAN untagged packets are possible.