H3C Technologies H3C S5120 Series Switches - Manual (Page 156)

2-3
Figure 2-2 Only IP phones access the network
Both modes forward tagged packets according to their tags.
The following tables list the required configurations on ports of different link types in order for these
ports to support tagged or untagged voice traffic sent from IP phones when different voice VLAN
assignment modes are configured.
z IP phones send tagged voice traffic
Table 2-2 Required configurations on ports of different links types in order for the ports to support
tagged voice traffic
Port link type
Voice VLAN
assignment
mode
Support for
tagged voice
traffic
Configuration requirements
Automatic
Access
Manual
No —
Automatic
Configure the default VLAN of the port,
which cannot be the voice VLAN, and assign
the port to its default VLAN.
Trunk
Manual
Yes
Make all the configurations required for the
automatic mode; in addition, assign the port
to the voice VLAN.
Automatic
Configure the default VLAN of the port,
which cannot be the voice VLAN, and
configure the port to permit packets of its
default VLAN to pass through untagged.
Hybrid
Manual
Yes
Make all the configurations required for the
automatic mode; in addition, configure the
port to permit packets of the voice VLAN to
pass through tagged.
z IP phones send untagged voice traffic
When IP phones send untagged voice traffic, you can only configure the voice traffic receiving ports on
the device to operate in manual voice VLAN assignment mode.