Description

Feature name

ValidateInitialDP

Applicable contexts

SS7 service

Typical feature execution points

DirectAccess_SessionPreCreditCheck

Prerequisite features

Classify Call Scenario Feature

The Validate InitialDP feature performs validation checks to ensure that the InitialDP has sufficient parameters to be handled correctly by Sentinel.

If the InitialDP is not valid, then the Valdiate InitialDP feature returns either continueAndClose or releaseAndClose to the Sentinel core. The choices of response and release cause are configurable. In the absence of configuration data, the default behaviour is releaseCallAndClose(Call-Rejected).

The validation performed includes:

  • check that InitialDP is present in session state

  • check that InitialDP is CAP

  • check that CallingPartyNumber is present in the InitialDP

  • if session type is mobile originating, check for presence of CalledPartyBCDNumber

  • if session type is mobile terminating or mobile forwarded, check for presence of CalledPartyNumber.

Session state inputs and outputs

Inputs

Name Type Format Description Behaviour if null/invalid

SentinelSelectionKey

com.opencloud.sentinel.common.SentinelSelectionKey

selection key (for example, <platform>::::)

For selecting configuration data for ValidationFailedAction if InitialDP fails validation

Runtime exception handled by feature runner

InitialDPArg

com.opencloud.slee.resources.cgin.cap_v1.CAP1InitialDPArg

CAP-DataTypes.InitialDPArg

InitialDPArg which triggered this session

Report featureCannotStart, featureHasFinished

CallType

com.opencloud.sentinel.common.CallType

One of: MobileOriginating, MobileTerminating, MobileForwarded, NetworkInitiated, EmergencyCall

Session type of this call for determining which party numbers should be present in InitialDPArg

Report featureCannotStart, featureHasFinished

Outputs

This feature does not modify session state.

Error scenarios

Scenario Handling

Sessionstate InitialDPArg is null

Report featureCannotStart

InitialDPArg is not CAP

Report featureCannotStart

Sessionstate CallType is null

Report featureCannotStart

Feature responses

Response Reason

featureCannotStart

InitialDP is not set in session state, InitialDP is not CAP or Session Type is not set in the session state

releaseCallAndCloseDialog

Configured to release on invalid InitialDP

continueAndCloseDialog

Configured to continue on invalid InitialDP

featureHasFinished

feature has finished

Configuration

The configuration allows two options on validation failure: releaseAndClose or continueAndClose. The release cause code may be configured.

Parameter Type Description

Action

String

one of: releaseAndClose or continueAndClose

ReleaseCause

Integer

cause code

Call flow

MSC ----- OpenRequest ----> Sentinel
MSC ------ InitialDP -----> Sentinel
MSC <----- OpenAccept ----- Sentinel
MSC <--- Release(cause) --- Sentinel

The release cause will be configurable (see cause values). The default will be a cause value of CLASS1_CALL_REJECTED.

Configuration profile naming

Configuration Profile Table Name Description Profile Naming

ValidateInitialDPFeatureConfigProfileTable

Configuration of behaviour on validation failure

SentinelSelectionKey (for example, OpenCloud:OpenCloud:call::)

Provisioning interfaces

The feature is provisioned using the Sentinel Features REST API or web interface.

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Sentinel Express Version 2.7.0