# GGSN CAC Policy Table

## Procedure

1. Right-click the device and then select Configure, or double-click the device.

2. Select GGSN CAC Policy Table from the Category drop-down box.

The following information appears:

> CAC Policy Name (cggsnUmtsQosCacPolicyName)

> Maximum Pdp-context (cggsnUmtsQosCacMaxPdp)

> Maximum Pdp Threshold (cggsnUmtsQosCacPdpThreshold)

> Maximum Traffic-Class (cggsnUmtsQosCacMaxTrafficClass)

> Traffic Handling Priority (cggsnUmtsQosCacMaxTrafHandPrio)

> Maximum Peak-throughput (cggsnUmtsQosCacMaxThruPut)

> Reject on Exceeding Peak-throughput (cggsnUmtsQosCacMaxThruPutReject)

> Maximum Delay-class (cggsnUmtsQosCacMaxDelayClass)

> Reject on Exceeding Max Delay-class (cggsnUmtsQosCacMaxDelayClassRej)

### CAC Policy Name (cggsnUmtsQosCacPolicyName)

Call Admission Control (CAC) policy name that will be attached to one or more Access Point Names (APNs).

### Maximum Pdp-context (cggsnUmtsQosCacMaxPdp)

Maximum number of Packet Data Protocol (PDP) contexts that can be created. When set to zero, there is no limit on PDP context creation.

### Maximum Pdp Threshold (cggsnUmtsQosCacPdpThreshold)

When the threshold defined by this object is reached, only PDP contexts with a allocation/retention priority of 1 are accepted.

Note the following:

> This object can be set only after cggsnUmtsQosCacMaxPdp has already been set.

> This value set for this object should be lower than the value set for cggsnUmtsQosCacMaxPdp.

> When set to zero, PDP context creation with allocation/retention will not be checked.

### Maximum Traffic-Class (cggsnUmtsQosCacMaxTrafficClass)

Indicates the highest acceptable traffic class. There are four possible values:

> conversational

> streaming

> interactive

> background

If the requested traffic class is higher than the configured traffic class, then the create PDP context request is rejected. Also note that a traffic class can not be downgraded.

### Traffic Handling Priority (cggsnUmtsQosCacMaxTrafHandPrio)

Indicates the priority of the traffic class set in cggsnUmtsQosCacMaxTrafficClass. There are four possible values:

> none

> priority1

> priority2

> priority3

Note the following:

> This object is applicable only to the traffic class type interactive.

> If no value is set for this object, then any priority is accepted.

### Maximum Peak-throughput (cggsnUmtsQosCacMaxThruPut)

Indicates the highest peak throughput class that can be accepted by a particular APN. This object is used only by GPRS Tunneling Protocol (GTP) v0 or GTP v1 PDP contexts containing R97/98 Quality of Service (QoS).

Note the following:

> If the requested peak throughput class is higher than the value specified by this object, then the request is either downgraded to the configured value or rejected.

> If no value for this object is set, then the request is mapped based on the R99 maximum bit rate rules for determining R99 attributes from R97/98 attributes (as defined in 23.107). In addition, the maximum bit rate parameter is applied to the request.

> If the value of this object is set to zero, then any throughput is accepted.

### Reject on Exceeding Peak-throughput (cggsnUmtsQosCacMaxThruPutReject)

When set to true, the PDP request is rejected when its value exceeds the value set for cggsnUmtsQosCacMaxThruPut. When set to false, the PDP is downgraded to the value set for cggsnUmtsQosCacMaxThruPut

This object can be set to true only when cggsnUmtsQosCacMaxThruPut is set to a non-zero value.

### Maximum Delay-class (cggsnUmtsQosCacMaxDelayClass)

Indicates the highest delay class that can be accepted by a particular APN. This object is used only by GTP v0 or GTP v1 PDP contexts containing R97/98 QoS.

There are five possible values:

> none

> delayClass1

> delayClass2

> delayClass3

> delayClass4

If the delay class set for a PDP request is higher than the value specified by this object, then the request is either downgraded to the configured value or rejected.

If no value for this object is set, then the request is mapped to either the R99 Interactive or Background traffic class, based on the rules for determining R99 attributes from R97/98 attributes (as defined in 23.107). In addition, the highest traffic handling priority is applied if the request is mapped to the Interactive traffic class.

### Reject on Exceeding Max Delay-class (cggsnUmtsQosCacMaxDelayClassRej)

When set to true, the PDP request is rejected when its value exceeds the value set for cggsnUmtsQosCacMaxDelayClass. When set to false, the PDP is downgraded to the value set for cggsnUmtsQosCacMaxDelayClass.

This object can be set to true only when cggsnUmtsQosCacMaxDelayClass is set to a value other than none.