Description

Feature name

IPSMGWDetermineNetworkOperator

Applicable contexts

IPSMGW service

Prerequisite features

None

The IPSMGW Determine Network Operator Feature sets the network operator element of the Sentinel selection key for use in the selection of:

  • feature execution scripts

  • mappers

  • address lists.

The feature will set the Network Operator element of the Sentinel selection key, based on the value returned by the DetermineNetworkOperator function below.

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 and updating network operator field

Report featureCannotStart, featureHasFinished

Outputs

Name Type Format Description

SentinelSelectionKey

com.opencloud.sentinel.common.SentinelSelectionKey

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

Only updated if network operator is determined

Error scenarios

Scenario Handling

Sessionstate SentinelSelectionKey is null

Report featureCannotStart

Trigger is null

Report featureCannotStart

Trigger event not a TCAPMessage or Push notification request

Report featureCannotStart

TCAP open request is null

Report featureCannotStart

DestinationAddress in DialogOpenRequestEvent is null

Report featureCannotStart

Could not match DestinationAddress in IPSMGWDetermineNetworkOperatorGlobalTitleAddress

Increment CouldNotDetermineNetworkOperator
Report featureFailedToExecute

Feature responses

Response Reason

featureCannotStart

Trigger event must be DialogOpenRequestEvent or PushUEReachabilityForIPResult, SessionState SentinelSelectionKey is not set, unsupported trigger, destination SCCP address not present in DialogOpenRequestEvent or destination SCCP GT address does not match and no default available

featureHasFinished

feature has finished

Behaviour

The following logic is used for determining the Network Operator

  • If the trigger is a push notification request that is not associated with a subscription by this service, then the default network operator is used

  • If the destinationSccpAddress.GT is not available, then the default network operator is used

  • If the destinationSccpAddress.GT is available but not found in the network operator selection table, then the default network operator is used

  • If the destinationSccpAddress.GT is found in the network operator selection table, then the network operator value from the matched selection table record is used.

The use of the destinationSccpAddress GT information is dependent on the subscriber’s HPLMN network configuration. It is possible that some networks may not pass the GT information set in the subscriber’s o-CSI or t-CSI.

Here is an example of SCCP address routing which includes the GT information:

application context: CAP-v2-gsmSSF-to-gsmSCF-AC
CAP OpenService Type: request/indication bitmask=0x1
CapOpenArg:
{
    applicationContext: 0 4 0 0 1 0 50 1
    nextBlockOpCode: not present
    originatingAddress:
    {
        P=C7, NI=0, RI=PCSSN, GTI=0,
              pc=5, SSN=146
    }
    destinationAddress:
    {
        P=C7, NI=0, RI=PCSSN, GTI=4,
              SSN=146, TT=0, NP=1 (isdn), ES=2 (even),
              NAI=4 (international num), DIG=420603059300
    }
    gprsOriginatingReference: not present
    gprsDestinationReference: not present
    user information length: not present

}

For subscribers who are configured for intra-PLMN only, it is possible that the CSI may contain a gsmSCP address containing only PC/SSN. In this case, the feature cannot operate, as no GT information will be available.

Configuration

Network Operator Destination Global Title SCCP Address Lists Selection Table:

Parameter Type Example Values

Address

GT Address

642100000012

NetworkOperator

String

MVNO1

Example table:

Address NetworkOperator

642100000001

OpenCloud

642100000011

OpenNet

642100000022

CloudNet

The default network operator is stored in the Sentinel configuration table.

Configuration profile naming

Configuration Profile Table Name Description Profile Naming

${PLATFORMOPERATOR}_IPSMGWDetermineNetworkOperator_AddressListConfigurationTable

Address list configuration

${SELECTIONKEY}:IPSMGWDetermineNetworkOperator:GlobalTitleAddress

${PLATFORMOPERATOR}_IPSMGWDetermineNetworkOperator_AddressListEntryTable

Feature-specific Address List entry table

${SELECTIONKEY}:IPSMGWDetermineNetworkOperator:GlobalTitleAddress:${ADDRESS}

SentinelConfigurationTable

Sentinel configuration table (contains DefaultNetworkOperator)

SentinelConfiguration
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Sentinel IP-SM-GW Version 4.1