Port Voice VLAN 
Mode 
Voice 
Stream Type 
Link type of the port and processing mode   
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
voice VLAN should be TAG.   
ACCESS: Supported.   
TRUNK: Not supported.   
Automatic Mode 
UNTAG voice 
stream 
GENERAL: Supported. The default VLAN of the port should
be voice VLAN and the egress rule of the access port in the
voice VLAN should be UNTAG. 
ACCESS: Not supported.   
TRUNK:Supported. The default VLAN of the port should 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
voice VLAN should be TAG.     
ACCESS: Supported.   
TRUNK: Not supported.   
Manual Mode 
UNTAG voice 
stream 
GENERAL: Supported. The default VLAN of the port should
be voice VLAN and the egress rule of the access port in the 
voice VLAN should be UNTAG.   
Table 9-2 Port voice VLAN mode and voice stream processing mode 
  Security Mode of Voice VLAN   
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.   
Security 
Mode 
Packet Type  Processing Mode 
UNTAG packet 
Packet with voice 
VLAN TAG   
When the source MAC address of the packet is the OUI address 
that can be identified, the packet can be transmitted in the voice 
VLAN. Otherwise, the packet will be discarded.   
Enable 
Packet with other 
VLAN TAG   
The processing mode for the device to deal with the packet is 
determined by whether the port permits   the VLAN or not, 
independent of voice VLAN security mode.   
UNTAG packet 
Packet with voice 
VLAN TAG   
Do not check the source MAC address of the packet and all the 
packets can be transmitted in the voice VLAN.   
Disable 
Packet with other 
VLAN TAG   
The processing mode for the device to deal with the packet is 
determined by whether the port permits the VLAN or not, 
independent of voice VLAN security mode.   
Table 9-3 Security mode and packets processing mode 
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