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Advanced Settings
Tip:
Up to 10 port VLANs can be configured.
Port VLAN cannot achieve inter-switch communication. Only ports that belong to the
same VLAN on the same switch can intercommunicate.
3 Voice VLAN
With the development of voice technology, voice devices are becoming more and more
widely used, especially in broadband resident districts. There are two kinds of traffic: voice
traffic and business traffic. Usually, voice traffic boasts higher priority in transmission than
business traffic to reduce delay and packets dropping.
Voice VLAN is a VLAN designed for voice data flow partition. By creating voice VLAN and
adding ports connected to voice devices into the voice VLAN, you can centrally transmit
data flow in the voice VLAN and it is very convenient to specifically configure QoS (Quality
of Service), enhancing transmission priority of voice traffic and guaranteeing
communication quality.
Voice Stream Recognition
According to the source MAC fields of the ingress packets, this device can distinguish
whether the data flow is voice data flow or not. If the source MAC address conforms to the
voice device’s OUI (Organizationally Unique Identifier) address, the packets will be
regarded as voice data flow.
You can preset OUI address or use the default OUI address as the criteria. An
Organizationally Unique Identifier (OUI) is a 24-bit number that uniquely identifies a
vendor, manufacturer, or other organization globally or worldwide. This device supports
OUI mask. You can adjust MAC address’ matching depth by setting different masks.
Voice VLAN mode on different ports
Two voice VLAN modes are available on this device: auto and manual. Here auto or
manual refers to how ports join voice VLAN.
Auto:
In this mode, through untagged packets sent out by the IP telephone, the system
can recognize source MACs of these packets to match OUI addresses. If matched
successfully, the system will automatically add ingress ports into the voice VLAN and
configure priority for these packets. Meanwhile, you can configure aging time of voice
VLAN on this device. If within the aging time, the system does not receive any voice traffic
from the ingress port, this port will be automatically removed from the voice VLAN. The
whole add/remove process will be achieved automatically. The auto mode applies to
PC-IP telephone serious connection, namely, voice traffic and business traffic are
transmitted concurrently. See network topology below:
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