TP-LINK TL-SG3216 User Manual

 

A voice VLAN can operate in two modes: automatic mode and manual mode.   

Automatic Mode: In this mode, the switch automatically add a port which receives voice packets to 

voice VLAN and determine the priority of the packets through learning the source MAC of the 

UNTAG packets sent from IP phone when it is powered on. The aging time of voice VLAN can be 

configured on the switch. If the switch does not receive any voice packet on the ingress port within 

the aging time, the switch will remove this port from voice VLAN. Voice ports are automatically 

added into or removed from voice VLAN. 

Manual Mode: You need to manually add the port of IP phone to voice VLAN, and then the switch 

will assign ACL rules and configure the priority of the packets through learning the source MAC 

address of packets and matching OUI address. 

In practice, the port voice VLAN mode is configured according to the type of packets sent out from 

voice device and the link type of the port. The following table shows the detailed information.   

ACCESS: Not supported. 

TRUNK: Supported. The default VLAN of the port can not be 
voice VLAN.   

TAG voice 
stream 

GENERAL: Supported. The default VLAN of the port can not 
be voice VLAN and the egress rule of the access port in the 
default VLAN should be TAG.   

Automatic Mode 

UNTAG voice 
stream 

ACCESS、TRUNK、GENERAL: Not supported. 

ACCESS: Not supported.   

TRUNK：Supported. The default VLAN of the port should be 
voice VLAN.   

TAG voice 
stream 

GENERAL：Supported. The default VLAN of the port can noe 
be voice VLAN and the egress rule of the access port in the 
default VLAN should be TAG.   

ACCESS: Supported. The default VLAN of the port should be 
voice VLAN.   

TRUNK: Supported. The default VLAN of the port should be 
voice VLAN and the access port permits the packets of the 
voice VLAN.   

Manual Mode 

UNTAG voice 
stream 

GENERAL: Supported. The default VLAN of the port can noe 
be voice VLAN and the egress rule of the access port in the 
default VLAN should be UNTAG.   

Table 9-2 Port voice VLAN mode and voice stream processing mode 

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When voice VLAN is enabled for a port, you can configure its security mode to filter data stream. If 

security mode is enabled, the port just forwards voice packets, and discards other packets whose 

source MAC addresses do not match OUI addresses. If security mode is not enabled, the port 

forwards all the packets.   

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