Alcatel-Lucent omniaccess User Manual

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 15

This document outlines the steps required to configure QoS on an 
Alcatel Mobility Controller for voice devices, including SIP phones 
and SVP phones. Since voice applications are more vulnerable to 
delay and jitter, the network infrastructure should be able to 
prioritize the voice traffic over the data traffic.

The central concept of an Alcatel Mobility Controller is of a role. 
The role of any wireless client determines its privileges including 
the priority that every type of traffic to/from the client gets in the 
wireless network. Thus the QoS configuration for voice 
applications is mostly done as part of the firewall roles and 
policies configuration (refer to the Configuring Firewall roles and 
policies document for more details).

Thus in an Alcatel system, the administrator can configure two 
roles – one for clients that do mostly data traffic such as laptops, 
and the other for clients that do mostly voice traffic such as VoIP 
phones. There are different means for the client to derive a role 
(refer to Configuring Firewall roles and policies for more details). 
In most cases, the users on the data traffic will be assigned a role 
after they get authenticated by using an authentication 
mechanism such as 802.1x or VPN or captive portal. The role for 
the VoIP phones can be derived from the OUI of their MAC 
addresses or the SSID they associate to. This role will typically be 
configured to have access allowed only for the voice protocol 
being used (for instance: SIP, SVP etc.).

The section below shows the steps to configure an Alcatel 
network for the two roles with the required privileges (the 
allowed protocols etc.) and the priorities assigned to different 
types of traffic.