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 > CAC
The CAC window is displayed. Use the drop-down boxes to select the desired Address Context, Zone and SIP Trunk Group. The Edit CAC window is displayed.
Figure 1: 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 parameters and then click Save.
Table 1: 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 Registrations | Specifies 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 Oversubscription | Specifies 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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