TP-LINK TL-SL2210 Specifications Page 116

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Port Voice VLAN Mode
A voice VLAN can operate in two modes: automatic mode and manual mode.
Automatic Mode: In this mode, the switch automatically adds a port which receives voice packets
to voice VLAN and determines 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.
Port Voice
VLAN Mode
Voice
Stream Type
Link type of the port and processing mode
Untagged: Not supported.
TAG voice
stream
Tagged: Supported. The default VLAN of the port can not be
voice VLAN.
Untagged: Supported.
Automatic Mode
UNTAG voice
stream
Tagged: Not supported.
Untagged: Not supported.
TAG voice
stream
TaggedSupported. The default VLAN of the port should not
be voice VLAN.
Untagged: Supported.
Manual Mode
UNTAG voice
stream
Tagged: Not supported.
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.
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