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

On the SBC main screen, go to Configuration > System Provisioning > Category: CAC Provisioning > Zone > CAC > Ingress or
All > Address Context > Zone > CAC > Ingress

Use the drop-down lists to select an Address Context and Zone. 

Zone CAC - Ingress 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.

Zone - CAC - Ingress Parameters


Parameter


Description

Call LimitSpecifies the total number of calls allowed for ingress. The value ranges from 0 to 2147483647 or unlimited.
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 sustained rate in calls/second for ingress 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 Call Burst Max and Call Rate Max 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 Call Burst Max and Call Rate Max as unlimited; however, if you assign a value to one parameter, the other must also be assigned a value.

Register Rate MaxSpecifies the maximum allowed sustained ingress rate (registrations per second) for initial SIP registrations. (range: 1-1000, or unlimited for SBC 5000 series; 1-1500, or unlimited for SBC 5400; 1-3000, or unlimited for SBC 7000 series). The default value is unlimited.
Register Burst MaxSpecifies the maximum allowed ingress burst (above the allowed sustained rate) for initial SIP registrations. (range: 1-1000, or unlimited for SBC 5000 series; 1-1500, or unlimited for SBC 5400; 1-3000, or unlimited for SBC 7000 series). The default value is unlimited.
Packet Rate MaxSpecifies the maximum sustained packet rate allowed (in packets/second). (range: 1-65535, or unlimited). Default: 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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