Definitions of the voice VLAN and default VLAN in an SVF system for S series switches

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For S series switches (except the S1700):
Voice VLAN: It is dedicated for the transmission of voice data flows.
Default VLAN (PVID): Each interface has a default VLAN configured. By default, VLAN 1 is the default VLAN of all interfaces.

Other related questions:
Default MUX VLAN configuration on S series switch
By default, the MUX VLAN function is disabled on interfaces of S series switches (except S1700). To enable this function on an interface, run the port mux-vlan enable command on the interface.

What is the voice VLAN
A voice VLAN refers to a VLAN used to transmit voice data flows. You can create a voice VLAN and add the interface connected to a voice device to the voice VLAN. Then voice data flows can be transmitted on the voice VLAN, ensuring the voice data transmission quality.

What is a voice VLAN of an AR router
A voice VLAN is divided for user voice data flow. By creating such a voice VLAN and adding the interface that connects to a voice device to the voice VLAN, voice data flow can be transmitted on the voice VLAN to ensure transmission quality.

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