User's Manual

891 | Voice and Video Dell Networking W-Series ArubaOS 6.4.x| User Guide
Working with QoS for Voice and Video
QoS settings for voice and video applications are configured when you configure firewall roles and policies.
Understanding VoIP Call Admission Control Profile
VoIP call admission control prevents any single AP from becoming congested with voice calls. You configure call
admission control options in the VoIP Call Admission Control profile, which you apply to an AP group or a
specific AP.
You can use the WebUI or CLI to configure a VoIP Call Admission Control profile.
In the WebUI
1. Navigate to the Configuration > AP Configuration page. Select either AP Group or AP Specific.
l If you select AP Group, click Edit for the AP group name for which you want to configure VoIP CAC.
l If you select AP Specific, select the name of the AP for which you want to configure VoIP CAC.
2. In the Profiles list, expand the QoS menu, then select the VoIP Call Admission Control profile.
3. In the Profile Details window pane, click the VoIP Call Admission Control profile drop-down list and
select the profile you want to edit.
-or-
To create a new profile, click the VoIP Call Admission Control profile drop-down list and select New. Enter
a new profile name in the field to the right of the drop-down list. You cannot use spaces in VoIP profile
names.
4. Configure your desired VoIP Call Admission Control profile settings. Table 190 describes the parameters
you can configure in this profile:
Parameter Description
VoIP Call Admission Control Select the Voip Call Admission Control checkbox to enable Wi-Fi VoIP
Call Admission Control features.
VoIP Bandwidth based CAC Select the VoIP Bandwidth based CAC checkbox to enable call
admission controls based upon bandwidth. If this option is not selected,
call admission controls are based on call counts.
VoIP Call Capacity The maximum number of simultaneous calls that the AP radio can handle.
You can use the bandwidth calculator in the WebUI to calculate the call
capacity. To access the bandwidth calculator, navigate to Configuration >
Management > Bandwidth Calculator. Default value: 10.
VoIP Bandwidth Capacity (kbps) Enter a rate from 1 to 600000 (inclusive) to specify the maximum
bandwidth rate that a radio can handle, in kbps. Default value is 2000
kbps.
VoIP Call Handoff Reservation Specify the percentage of call capacity reserved for mobile VoIP clients on
an active call. Default value is 20%.
VoIP Send SIP 100 Trying The SIP invite call setup message is time-sensitive, as the originator
retries the call as quickly as possible if it does not proceed. You can direct
the controller to immediately reply to the call originator with a “SIP 100 -
trying” message to indicate that the call is proceeding and to avoid a
possible timeout. This is useful in conditions where the SIP invite may be
redirected through a number of servers before reaching the controller.
Table 190: VoIP Call Admission Control Configuration Parameters