TP-Link T2500G-10TS - Page 175

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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.
Port Voice
VLAN Mode
Voice
Stream
Type
Link type of the port and processing mode
Automatic
Mode
TAG voice
stream
ACCESS: Not supported.
TRUNK: Supported. The default VLAN of the port cannot be
voice VLAN.
GENERAL: Supported. The default VLAN of the port cannot
be voice VLAN and the egress rule of the access port in the
voice VLAN should be TAG.
UNTAG
voice
stream
ACCESS: Supported.
TRUNK: Not supported.
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.
Manual Mode
TAG voice
stream
ACCESS: Not supported.
TRUNK：Supported. The default VLAN of t
he port should not
be voice VLAN.
GENERAL：Supported. The default VLAN of the port cannot
be voice VLAN and the egress rule of the access port in the
voice VLAN should be TAG.
UNTAG
voice
stream
ACCESS: Supported.
TRUNK: Not supported.
GEN
ERAL: 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 10-2 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.