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Use this window to configure egress call admission control (CAC) parameters for a specified zone.

On the SBC main screen, go to Configuration > System Provisioning > Category: CAC Provisioning > Zone > CAC > Egress. The Egress window is displayed.

Use the drop-down boxes to select the desired Address Context and Zone. The Edit Egress window is displayed:

CAC Provisioning - Zone - CAC - Egress

Note: An example dialog box is shown here. Refer to the table below for model-specific allowed values.

 

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.

Zone - CAC - Egress Parameters


Parameter


Description

Call LimitSpecifies the total number of calls allowed for Egress.
Emergency OversubscriptionSpecifies the oversubscription of resources (as a percentage) that is allowed for emergency calls. The value ranges from 0 to 1000 and the default value is 10.
Extended Emergency IP LimitThe resource oversubscription (expressed as numeric value) allowed for emergency calls. The value ranges from 0 to 40000 with a default value of 0.
Call Rate Max

Specifies the value of maximum allowed burst in calls/second (above the allowed sustained rate) for egress call attempts.

SBC 5xx0 / 5400 / SWe - Range: 1-450, or unlimited. (The default value is unlimited.)

SBC 7000 - Range: 1-1,350, or unlimited. (The default value is unlimited.)

Note: You can set both “callBurstMax” and “CallRateMax” as unlimited; however, if you assign a value to one parameter, the other must also be assigned a value.

Call Burst Max

Specifies the value of maximum allowed burst (above the allowed sustained rate) for egress call attempts in calls/second. 

SBC 5xx0 / 5400 /SWe - Range: 1-900, or unlimited. (The default value is unlimited.)

SBC 7000 - Range: 1-2,700, or unlimited. (The default value is unlimited.)

Note: You can set both “callBurstMax” and “CallRateMax” as unlimited; however, if you assign a value to one parameter, the other must also be assigned a value.

Register Rate MaxSpecifies the maximum sustained Egress rate (registrations per second) of initial SIP registrations allowed. (range: 1-1000, or unlimited. SBC 7000 series range is 1-3000, or unlimited).
Register Burst MaxSpecifies the maximum allowed burst (above the allowed sustained rate) for egress initial SIP registrations. (range: 1-1000, or unlimited. SBC 7000 series range is 1-3000, or unlimited).
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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