3Com E4500-24 Cli Configuration Manual page 101

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