User Guide

109
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.
Port Voice
VLAN Mode
Vo i c e
St r e am Typ e
Link type of the port and processing mode
Automatic Mode
TAG voice
stream
Untagged: Not supported.
Tagged: Supported. The default VLAN of the port cannot
be
voice VLAN.
UNTAG voice
stream
Untagged: Supported.
Tagged: Not supported.
Manual Mode
TAG voice
stream
Untagged: Not supported.
Tagged：Supported. The default VLAN of the port should not
be voice VLAN.
UNTAG voice
stream
Untagged: Supported.
Tagged: Not supported.
Table 9-2 Port voice VLAN mode and voice stream processing mode

Se curity 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.
Se curity M ode Packet Type Processing Mode
Enable
UNTAG packet
When the source MAC address of the packet is the OUI
address that can be identified, the packet can be
trans
mitted in the voice VLAN. Otherwise, the packet will
be discarded.
Packet with voice
VLAN TAG
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.
Disable
UNTAG packet
Do not check the source MAC address of the packet and all
the packets can be transmitted in the voice VLAN.
Packet with voice
VLAN TAG
Packet with other
VLAN TAG
The processing mode for the dev
ice 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
Note:
Don’t transmit voice stream together with other business packets in the voice VLAN except for
some special requirements.
The Voice VLAN function can be implemented on Global Config, Port Config and OUI Config
pages.