TP-Link TL-SG2424 User Manual page 140

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 Voice
VLAN Mode Stream Type
TAG voice
stream
Automatic Mode
UNTAG voice
stream
TAG voice
stream
Manual Mode
UNTAG voice
stream
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
UNTAG packet
Packet with voice
VLAN TAG
Enable
Packet with other
VLAN TAG
UNTAG packet
Packet with voice
VLAN TAG
Disable
Packet with other
VLAN TAG
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.
Link type of the port and processing mode
Untagged: Not supported.
Tagged: Supported. The default VLAN of the port cannot be
voice VLAN.
Untagged: Supported.
Tagged: Not supported.
Untagged: Not supported.
Tagged：Supported. The default VLAN of the port should not
be voice VLAN.
Untagged: Supported.
Tagged: Not supported.
Processing Mode
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.
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.
Do not check the source MAC address of the packet and all
the packets can be transmitted in the voice VLAN.
The processing mode for the device to deal with the packet
is determined by whether the port permits
not, independent of voice VLAN security mode.
Table 9-3 Security mode and packets processing mode
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the VLAN or