Specifications

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Cisco Wireless LAN Controller Configuration Guide

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Chapter 4 Configuring Controller Settings

Configuring Voice Prioritization Using Preferred Call Numbers

You can configure a controller to support calls from clients that do not support TSPEC-based calls. This

feature is known as voice prioritization. These calls are given priority over other clients utilizing the

voice pool. Voice prioritization is available only for SIP-based calls and not for TSPEC-based calls. If

the bandwidth is available, it takes the normal flow and allocates the bandwidth to those calls.

You can configure up to six preferred call numbers. When a call comes to one of the configured preferred

numbers, the controller does not check on the maximum call limit. It invokes the CAC to allocate

bandwidth for the preferred call. The bandwidth allocation is 85 percent of the entire bandwidth pool,

not just from the maximum configured voice pool. The bandwidth allocation is the same even for

roaming calls.

You must configure the following before configuring voice prioritization:

• Set WLAN QoS to platinum.

• Enable ACM for the radio.

• Enable SIP call snoopint on the WLAN.

Note Cisco 4400, 5500, and 2106 Series Controllers and all nonmesh access points do not support voice

prioritization.

This section cotains the followig topics:

• Using the GUI to Configure a Preferred Call Number, page 4-90

• Using the CLI to Configure a Preferred Call Number, page 4-91

Using the GUI to Configure a Preferred Call Number

To configure voice prioritization using the controller GUI, follow these steps:

Step 1 Set the WLAN QoS profile to Platinum. See the “Using the GUI to Assign a QoS Profile to a WLAN”

section on page 7-38.

Step 2 Enable ACM for the WLAN radio. See the “Using the GUI to Configure Voice Parameters” section on

page 4-75.

Step 3 Enable SIP call snooping for the WLAN. See the “Using the GUI to Configure Media Session Snooping”

section on page 7-43.

Step 4 Choose Wireless > Advanced > Preferred Call to open the Preferred Call page.

All calls configured on the controller appear.

Note To remove a preferred call, hover your cursor over the blue drop-down arrow and choose Remove.

Step 5 Click Add Number to add a new preferred call.

Step 6 In the Call Index text box, enter the index that you want to assign to the call. Valid values are from 1

through 6.

Step 7 In the Call Number text box, enter the number.