HP 6125G Configuration Manual page 141

suitable for scenarios where PCs and IP phones connected in series access the network through the
device and ports on the device transmit both voice traffic and data traffic at the same time, as shown
in Figure 40. When the voice VLAN works normally, when the system reboots, the system reassigns
ports in automatic voice VLAN assignment mode to the voice VLAN after the reboot, ensuring that
existing voice connections can work normally. In this case, voice traffic streams do not trigger port
assignment to the voice VLAN.
Figure 40 PCs and IP phones connected in series access the network
• Manual mode—You must manually assign an IP phone accessing port to a voice VLAN. Then, the
system matches the source MAC addresses carried in the packets against the device's OUI
addresses. If the system finds a match, it issues ACL rules and configures the packet precedence. In
this mode, you must manually assign ports to, or remove ports from, a voice VLAN. Manual mode
is suitable for scenarios where only IP phones access the network through the device and ports on
the device transmit only voice traffic, as shown in
VLAN transmit voice traffic exclusively, which prevents the impact of data traffic on the transmission
of voice traffic.
Figure 41 Only IP phones access the network
Both modes forward tagged packets sent out of IP phones according to their tags.
list the configurations required for ports of different link types to support tagged or untagged voice traffic
sent from IP phones when different voice VLAN assignment modes are configured.
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.
Table 15 Required configurations on ports of different link types for them to support tagged voice traffic
Port link Voice VLAN
type assignment mode
Automatic
Access
Manual
Trunk Automatic
Figure
Support for tagged
voice traffic
No
Yes
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41. In this mode, ports assigned to a voice
Configuration requirements
N/A
The PVID of the port cannot be the voice VLAN.
Table 15 and Table 16