Aastra 9000i Series Administrator's Manual page 214

Virtual LAN (optional)
Virtual Local Area Network (VLAN) is a feature on the IP phone that allows for multiple logical
Ethernet interfaces to send outgoing RTP packets over a single physical Ethernet as described in
IEEE Std 802.3. On the IP phone, you configure a VLAN ID that associates with the physical
Ethernet port.
By configuring specific VLAN parameters, the IP phones have the capability of adding and
removing tags, and processing the ID and priority information contained within the tag.
VLAN on the IP phones is disabled by default. When you enable VLAN, the IP phone provides
defaults for all VLAN parameters. If you choose to change these parameters, you can configure
them using the configuration files, the IP Phone UI, or the Aastra Web UI.
The following sections describe the VLAN features you can configure on the IP phones.
Type of Service (ToS), Quality of Service (QoS), and DiffServ QoS
ToS is an octet as a field in the standard IP header. It is used to classify the traffic of the different
QoSs.
QoS provides service differentiation between IP packets in the network. This service
differentiation is noticeable during periods of network congestion (for example, in case of
contention for resources) and results in different levels of network performance.
Port 0 is the Ethernet LAN Port connected to the network. Port 1 is the Ethernet PC Port used for
passthrough to a PC.
Differentiated Service (DiffServ) QoS is class-based where some classes of traffic receive
preferential handling over other traffic classes.
The Differentiated Services Code Point (DSCP) value is stored in the first six bits of the ToS field.
Each DSCP specifies a pa rticular per-hop behavior that is applied to a packet.
The following parameters allow an administrator to configure ToS, QoS, and DiffServ QoS for
VLAN:
Parameters in Configuration Files
Global
tagging enabled
priority non-ip
LAN Port
vlan id
tos priority map
tos priority map
41-001343-01 Rev 02, Release 3.2.2
Note: All latest VLAN functionality is backwards compatible with IP
Phone Releases 1.3 and 1.3.1.
Parameters in Aastra Web UI
VLAN enable
Priority, Non-IP Packet
VLAN ID
SIP Priority
RTP Priority
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