3Com 4200G 12-Port Configuration Manual page 96

Table 1-2 Matching relationship between port types and voice devices capable of acquiring IP address
and voice VLAN automatically
Voice VLAN Voice
assignment traffic
mode type
Tagged
voice
traffic
Automatic
Untagge
d voice
traffic
Tagged
voice
traffic
Manual
Untagge
d voice
traffic
IP phones acquiring IP address and voice VLAN through manual configuration can forward only tagged
traffic, so the matching relationship is relatively simple, as shown in
Port type
Access Not supported
Supported
Make sure the default VLAN of the port exists and is not
Trunk
a voice VLAN, and the access port permits the traffic of
the default VLAN.
Supported
Make sure the default VLAN of the port exists and is not
Hybrid
a voice VLAN, and the default VLAN is in the list of the
VLANs whose traffic is permitted by the access port.
Access
Not supported, because the default VLAN of the port
must be a voice VLAN and the access port is in the voice
Trunk
VLAN. This can be done by adding the port to the voice
VLAN manually.
Hybrid
Access Not supported
Supported
Make sure the default VLAN of the port exists and is not
Trunk
a voice VLAN, and the access port permits the traffic of
the default VLAN and the voice VLAN.
Supported
Make sure the default VLAN of the port exists and is not
a voice VLAN, the traffic of the default VLAN is permitted
Hybrid
to pass through the port, and the voice VLAN is in the list
of the tagged VLANs whose traffic is permitted by the
port.
Supported
Access
Make sure the default VLAN of the port is a voice VLAN.
Supported
Trunk
Make sure the default VLAN of the port is a voice VLAN
and the port permits the traffic of the VLAN.
Supported
Make sure the default VLAN of the port is a voice VLAN
Hybrid
and is in the list of untagged VLANs whose traffic is
permitted by the port.
1-5
Supported or not
Table 1-3: