Users Guide

Table Of Contents
Dell PowerConnect ArubaOS 5.0 | User Guide Voice and Video | 551
5. Click Apply to save your settings.
Using the CLI to configure the VoIP Call Admission Control profile
wlan voip-cac-profile <profile>
bandwidth-cac
bandwidth-capacity <bandwidth-capacity>
call-admission-control
call-capacity
call-handoff-reservation <percent>
disconnect-extra-call
send-sip-100-trying
send-sip-status-code client|server <code>
wmm_tspec_enforcement
wmm_tspec_enforcement_period <seconds>
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.
Select the VoIP Send SIP 100 Trying checkbox to send SIP 100-trying messages to a call
originator to indicate that the call is proceeding. This is a useful option when the SIP
invite is directed through many servers before reaching the controller.
VoIP Disconnect Extra Call In the VoIP Call Admission Control (CAC) profile, you can limit the number of active voice
calls allowed on a radio. This feature is disabled by default. When the disconnect extra
call feature is enabled, the system monitors the number of active voice calls, and if the
defined threshold is reached, any new calls are disconnected. The AP denies
association requests from a device that is on call.
To enable this feature, select the VoIP Disconnect Extra Call checkbox. You also need to
enable call admission control in this profile.
VOIP TSPEC Enforcement A WMM client can send a Traffic Specification (TSPEC) signaling request to the AP
before sending traffic of a specific AC type, such as voice. You can configure the
controller so that the TSPEC signaling request from a client is ignored if the underlying
voice call is not active; this feature is disabled by default. If you enable this feature, you
can also configure the number of seconds that a client must wait to start the call after
sending the TSPEC request (the default is one second).
Select the VoIP TSPEC Enforcement checkbox to validate of TSPEC requests for CAC.
VOIP TSPEC Enforcement Period Select the maximum time, in seconds, for the station to start the call after the
TSPEC request.
VoIP Drop SIP Invite and send status
code (client)
Click the VoIP Drop SIP Invite and send status code (client) drop-down list and select
one of the following status codes to be sent back to the client:
z 480: Temporary Unavailable
z 486: Busy Here
z 503: Service Unavailable
z none: Don't send SIP status code
VoIP Drop SIP Invite and send status
code (server)
Click the VoIP Drop SIP Invite and send status code (client) drop-down list and select
one of the following status codes to be sent back to the server:
z 480: Temporary Unavailable
z 486: Busy Here
z 503: Ser vice Unavailable
z none: Don't send SIP status code
Table 120 VoIP Call Admission Control Configuration Parameters
Parameter Description