In this section:

Zone CAC

Use the zone CAC parameters to configure call admission control (CAC) settings for a zone on ingress, on egress, and for the zone as a whole.

Command Syntax

Note

Unless annotated otherwise, the parameter values in this section apply to the SBC Core.

% set addressContext <addressContext_name> zone <zone_name> cac 
	bandwidthLimit <0-2147483647, or unlimited>
	bandwidthLimitThreshold <0-100>
	bandwidthVideoThreshold <0-100>
	callLimit <0-2147483647, or unlimited>
	callLimitThreshold <0-100>
	egress 
	emergencyOversubscription <0-1000>
	extendedEmergencyIpLimit <0-40000>
	hpcOversubscription <0-100>
	ingress
	registrationLimit <0-2147483647, or unlimited>

 


Note

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

Command Parameters

Zone Parameters

Parameter

Length/Range

Description

bandwidthLimit0-2147483647, or unlimitedTotal bandwidth limit in Kbps/sec.
bandwidthLimitThreshold0-100Bandwidth utilization notification threshold, as a percentage. (default = 0)
bandwidthVideoThreshold0-100

Enter 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. (default = 0)

callLimit0-2147483647, or unlimitedTotal number of calls allowed on this zone. (default = 'unlimited')
callLimitThreshold0-100Call limit utilization notification threshold, as a percentage. (default = 0)
egressN/AEgress-specific call admission control configuration. See the Egress Parameters table below for details.
emergencyOversubscription0-1000, or unlimitedThis parameter gives priority treatment to emergency calls by specifying the resource over-subscription percentage allowed for emergency calls, and represents the allowed percentage of emergency calls beyond the configured call limit. When the call limit is reached, normal calls are rejected but emergency calls are accepted up to an expanded limit. (default = 10)
extendedEmergencyIpLimit0-40000Additional number of emergency calls (expressed as a numeric value) allowed if call limit and emergency over-subscription quota are exhausted. (default = 0)
hpcOversubscription0-100This parameter specifies the amount of resource over-subscription (as a percentage) allowed for HPC calls. When the baseline call limit and bandwidth limit are reached, normal calls are not admitted, but additional HPC calls are allowed up to the configured percentage value. (default = 10)

ingress

N/A

Ingress-specific call admission control configuration. See the Ingress Parameters table below for details.

registrationLimit0-2147483647, or unlimitedThe number of concurrent registrations allowed in this zone. (default = 'unlimited')


Egress

Command Syntax

% set addressContext <addressContext_name> zone <zone_name> cac egress 
		callBurstMax <1-900, or unlimited> (SBC 7000 range is 1-2700)
		callLimit <0-2147483647, or unlimited>
		callRateMax <1-450, or unlimited> (SBC 7000 range is 1-1350)
		emergencyOversubscription <0-1000>
		extendedEmergencyIpLimit <0-40000>
		hpcOversubscription <0-100>
		registerBurstMax <1-3000 or unlimited> (1-1000 or unlimited for SBC 5xx0; 1-1500 or unlimited for SBC 5400; 1-3000 or unlimited for SBC 7000)
		registerRateMax <1-3000 or unlimited> (1-1000 or unlimited for SBC 5xx0; 1-1500 or unlimited for SBC 5400; 1-3000 or unlimited for SBC 7000)

Command Parameters

Egress Parameters

ParameterLength/RangeDescription
callBurstMax

SBC 5000:
1-900, or unlimited.

SBC 7000:
1-2700, or unlimited

Maximum allowed burst (above the allowed sustained rate) for egress call attempts, in calls/second. (default = 'unlimited')
callLimit0-2147483647, or unlimitedTotal number of outbound concurrent calls allowed. (default = 'unlimited' )
callRateMax

SBC 5000:
1-450, or unlimited.

SBC 7000:
1-1350, or unlimited

Maximum sustained egress call rate allowed in calls/second. (default = 'unlimited' )

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

emergencyOversubscription0-1000Over-subscription of resources (as a percentage) allowed for emergency calls. (default = 10)
extendedEmergencyIpLimit0-40000Additional number of emergency calls (expressed as a numeric value) allowed if call limit and emergency over-subscription quota are exhausted. (default = 0)
hpcOversubscription0-100This parameter specifies the amount of resource over-subscription (as a percentage) allowed for HPC calls. When the baseline call limit and bandwidth limit are reached, normal calls are not admitted, but additional HPC calls are allowed up to the configured percentage value. (default = 10)
registerBurstMax

SBC 5xx0:
1-1000 or unlimited

SBC 5400:
1-1500 or unlimited

SBC 7000:
1-3000 or unlimited

Specifies the maximum allowed egress burst (above the allowed sustained rate) for initial SIP registrations. The default value is unlimited. 

Modified: for 8.2.5

registerRateMax

SBC 5xx0:
1-1000 or unlimited

SBC 5400:
1-1500 or unlimited

SBC 7000:
1-3000 or unlimited

Specifies the maximum allowed sustained egress rate (registrations per second) for initial SIP registrations. The default value is unlimited. 

Modified: for 8.2.5

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

Ingress

Command Syntax

% set addressContext <addressContext_name> zone <zone_name> cac ingress 
	callBurstMax <1-900, or unlimited> (SBC 7000 range is 1-2700)
	callLimit <0-2147483647, or unlimited>
	callRateMax <1-450, or unlimited> (SBC 7000 range is 1-1350)
	emergencyOversubscription <0-1000>
	extendedEmergencyIpLimit <0-40000>
	hpcOversubscription <0-100>
	packetRateMax <1-65535, or unlimited>
	registerBurstMax <1-3000 or unlimited> (1-1000 or unlimited for SBC 5xx0; 1-1500 or unlimited for SBC 5400; 1-3000 or unlimited for SBC 7000)
	registerRateMax <1-3000 or unlimited> (1-1000 or unlimited for SBC 5xx0; 1-1500 or unlimited for SBC 5400; 1-3000 or unlimited for SBC 7000)

Command Parameters

Ingress Parameters

ParameterLength/RangeDescription
callBurstMax

SBC 5000:
1-900, or unlimited.

SBC 7000:
1-2700, or unlimited

Maximum allowed burst (above the allowed sustained rate) for ingress calls, in calls/second. (default = 'unlimited')
callRateMax

SBC 5000:
1-450, or unlimited.

SBC 7000:
1-1350, or unlimited

Maximum sustained ingress call rate allowed in calls/second. (default is 'unlimited')

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

emergencyOversubscription 0-1000Over-subscription of resources (as a percentage) allowed for emergency calls. (default = 10)
extendedEmergencyIpLimit 0-40000Additional number of emergency calls (expressed as a numeric value) allowed if call limit and emergency over-subscription quota are exhausted. (default = 0)  
hpcOversubscription0-100This parameter specifies the amount of resource over-subscription (as a percentage) allowed for HPC calls. When the baseline call limit and bandwidth limit are reached, normal calls are not admitted, but additional HPC calls are allowed up to the configured percentage value. (default = 10)
packetRateMax1-65535, or unlimitedMaximum sustained packet rate allowed in packets/second. (default = 'unlimited')
registerBurstMax

SBC 5xx0:
1-1000 or unlimited

SBC 5400:
1-1500 or unlimited

SBC 7000:
1-3000 or unlimited

Specifies the maximum allowed ingress burst (above the allowed sustained rate) for initial SIP registrations. The default value is unlimited. 

Modified: for 8.2.5

registerRateMax

SBC 5xx0:
1-1000 or unlimited

SBC 5400:
1-1500 or unlimited

SBC 7000:
1-3000 or unlimited

Specifies the maximum allowed sustained ingress rate (registrations per second) for initial SIP registrations. The default value is unlimited. 

Modified: for 8.2.5

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