Use this page to configure parameters associated with SIP trunk group call admission control (CAC) configuration.

On the SBC main screen, go to Configuration > System Provisioning > Category: Trunk Provisioning > Trunk Group > SIP Trunk Group > CACThe CAC window is displayed.

Use the drop-down boxes to select the desired Address Context, Zone and SIP Trunk GroupThe Edit CAC window is displayed. 

SIP Trunk Group - CAC Edit Window


Note

SIP subscription CAC limits are not applied to SUBSCRIBE requests from registered users in access deployments.

Use the following table to configure the options and then click Save.

SIP Trunk Group - CAC Parameters

Parameter

Description

Call Limit

Specifies the total number of concurrent calls (either ingress or egress) allowed. The value ranges from 0 to 2147483647 or unlimited (default).

Bandwidth Limit

Specifies the total media bandwidth limit, in Kbits/sec. The value ranges from 0 to 2147483647 or unlimited (default).
Bandwidth Video Threshold

Specifies a threshold value (as a percentage of video bandwidth) to limit video streams to a specific bandwidth to prevent video calls consuming call bandwidth otherwise needed for audio calls. The value ranges from 0 to 100 and the default value is 0 which indicates no video threshold value.

Call Limit Threshold

Specifies the Call Limit utilization notification threshold, as a percentage. The value ranges from 0 to 100 and the default value is 0.

Bandwidth Limit Threshold

Specifies the Bandwidth utilization notification threshold as a percentage. The value ranges from 0 to 100 and the default value is 0.

Emergency Oversubscription

Specifies the percentage of resource oversubscription allowed for emergency calls. The value ranges from 0 to 1000 and the default value is 0.

Extended Emergency IP Limit

Specifies the resource oversubscription (expressed as numeric value) allowed for emergency calls. The value ranges from 0 to 40000 and the default value is 0.

Registration Limit

Specifies the total number of concurrent SIP registrations allowed. The value ranges from 0 to 2147483647 or unlimited (default).

Registered Endpoint CAC Profile

Specifies the endpoint CAC profile containing CAC parameters that are applied individually to each registrant.
Unregistered Endpoint CAC Profile

Specifies the endpoint CAC profile containing CAC parameters that are applied individually to each unregistered peer.

Estimated Child RegistrationsSpecifies the estimated number of child registrations (that is, the estimated number of P-Associated-URIs in 200 OK message). The value ranges from 1 to 256 and the default value is 1.

Subscription Limit

Specifies the total number of concurrent SIP subscriptions allowed on IP trunk group. The value ranges from 0 to 2147483647 or unlimited (default).

TCP Media Limit

Specifies the MRM session limit per trunk group. The value ranges from 0 to 5000 or unlimited (default).

Hpc OversubscriptionSpecifies the over-subscription of the resources (in a percentage) that is allowed for HPC calls. When the baseline call limit and bandwidth limits are reached, normal calls are not admitted, but additional HPC calls are allowed up to the configured value percentage. The value ranges from 0 to 100 % and the default value is 10 %.

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