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This section lists the services in the right pane under the Service Handlers tab:

TCAP Screening Service

The TCAP screening service allows the service handler to decide if the originator of the query is allowed to send the request. The TCAP screening service searches the various databases using the signaling message criteria given by the service handler. The TCAP screening service verifies if the combination of MTP, SCCP, and TCAP requires a mandatory event or a
user-defined event based on the combination of MTP, SCCP, and TCAP information. The TCAP screening service provides the following functionality:

  • Signaling message analysis - the signaling message service handler searches the various tables provided by the service.

For a detailed description of the service handlers tab, see the Overview section.

For a description of the service handler instance components, see SS7 Database Applications Service Handler Instance Components.

Enable the TCAPScrnSvc service in the right pane using Add a service to the service handler  procedure.

For a detailed description of the mandatory events, see Mandatory Events.

The TCAP screening service provides the following mandatory events:

  • SERVICE ERROR
  • TCAP ERROR
  • SIGNALING RELATIONSHIP FOUND
  • SIGNALING RELATIONSHIP NOT FOUND

For information on the service panel, refer to Service panel.

For information on procedures, refer to Service Handlers tab procedures.

 Number Portability Service

The number portability service allows access to the location routing number defined in local and wireless number portability. The service handler uses the information given by the number portability service to alter the behavior of the routing or to respond to a query.

The number portability service provides the following functionality:

  • Generates an event based on the data found in a number portability service
  • Derives a list of point codes for a subscriber number
  • Derives a location routing number for a subscriber number

For a detailed description of the service handlers tab, see the Overview section.

Information on the service handler instance components is available in the SS7 Database Applications Service Handler Instance Components.

Enable the NPSvc service in the right pane using Add a service to the service handler procedure.

For a detailed description of the mandatory events, see Mandatory Events.


The number portability service provides the following mandatory events:

  • SERVICE ERROR
  • PORTED NUMBER FOUND
  • POOLED NUMBER FOUND
  • NOT FOUND
  • SIGNALING RELATIONSHIP FOUND
  • SIGNALING RELATIONSHIP NOT FOUND

For information on the service panel, refer to Service panel.

For information on procedures, refer to Service Handlers tab procedures.

Subscriber Routing Service

The subscriber routing service allows subscriber-by-subscriber routing decisions to be made. The subscriber routing service does not explicitly respond to the signaling messages, instead searches the subscriber databases using the subscriber number given by the service handler.

The subscriber routing service provides the following functionality:

  • Derives a list of routing numbers that are applicable for a subscriber number
  • Generates an event based on the data found in a subscriber routing service data

For a detailed description of the service handlers tab, see the Overview section.

Information on the service handler instance components is available in the SS7 Database Applications Service Handler Instance Components.

Enable the SubsRouteSvc service in the right pane using Add a service to the service handler procedure.

For a detailed description of the mandatory events, see Mandatory Events.

The subscriber routing service provides the following mandatory events:

  • SERVICE ERROR
  • SERVICE COMPLETED
  • NOT FOUND

For information on the service panel, refer to Service panel.

For information on procedures, refer to Service Handlers tab procedures.

Mobile Identity Routing Service

The mobile identity routing service allows subscriber-by-subscriber routing decisions to be made using the MIN parameters.

The mobile identity routing service provides the following functionality:

  • Derives a list of routing numbers that are applicable for a mobile identification number
  • Generates an event based on the data found in the mobile identity routing service table

For a detailed description of the service handlers tab, see the Overview section.

Information on the service handler instance components is available in the SS7 Database Applications Service Handler Instance Components.

Enable the MINRouteSvc service in the right pane using Add a service to the service handler procedure.

For a detailed description of the mandatory events, see Mandatory Events.


The mobile identity routing service provides the following mandatory events:

  • SERVICE ERROR
  • SERVICE COMPLETED
  • NOT FOUND

For information on the service panel, refer to Service panel.

For information on procedures, refer to Service Handlers tab procedures.

IMSI Routing Service

The IMSI routing service allows the information from the called party address and the IMSI
routing service to derive a destination for the signaling message. The IMSI routing service provides the following functionality:

  • Derives a routing number applicable for an IMSI
  • Generates an event based on the data found in the IMSI routing service table

For a detailed description of the service handlers tab, see Overview section.

Information on the service handler instance components is available in the SS7 Database Applications Service Handler Instance Components.

Enable the IMSIRouteSvc service in the right pane using Add a service to the service handler procedure.

For a detailed description of the mandatory events, see Mandatory Events.

The IMSI routing service provides the following mandatory events:

  • SERVICE ERROR
  • SERVICE COMPLETED
  • NOT FOUND

For information on the service panel, refer to Service panel.

For information on procedures, refer to Service Handlers tab procedures.

Call Type Screening Service

The call type screening service allows the service handler to verify whether the calling number is allowed to call a particular type of number.

The call type screening service provides the following functionality:

  • Verifies if a calling number is associated with various call types
  • Generates an event based on the data found in the call type screening service table

For a detailed description of the service handlers tab, see the Overview section.

Information on the service handler instance components is available in the SS7 Database Applications Service Handler Instance Components.

Enable the CTSSvc service in the right pane using  Add a service to the service handler procedure.

For a detailed description of the mandatory events, see Mandatory Events.


The call type screening service provides the following mandatory events:

  • SERVICE ERROR
  • SERVICE COMPLETED
  • NOT FOUND

For information on the service panel, refer to Service panel.

For information on procedures, refer to Service Handlers tab procedures.

Calling Number Screening Service

The calling number screening service allows the service handler to verify whether the calling number is allowed to use the network and access the called number.

The calling number screening service provides the following functionality:

  • Generates a specific user event associated with a calling number
  • Supports calling number analysis, custom list analysis, and system list analysis

For a detailed description of the service handlers tab, see the Overview section.

Information on the service handler instance components is available in the SS7 Database Applications Service Handler Instance Components.

Enable the CgScrnSvc service in the right pane using Add a service to the service handler procedure.

For a detailed description of the mandatory events, see Mandatory Events.

The calling number screening service provides the following mandatory events:

  • SERVICE ERROR
  • NOT FOUND
  • SERVICE COMPLETED
  • CUSTOM LIST
  • SYSTEM LIST

For information on the service panel, refer to Service panel.

For information on procedures, refer to Service Handlers tab procedures.

Called Number Screening Service

The called number screening service allows the service handler to verify whether the calling number is allowed to receive calls via the network and if the called number grants access from the calling number. The called number screening service supports called number analysis, custom list analysis, and system list analysis.

For a detailed description of the service handlers tab, see the Overview section.

Information on the service handler instance components is available in the SS7 Database Applications Service Handler Instance Components.

Enable the CdScrnSvc service in the right pane using Add a service to the service handler procedure.

For a detailed description of the mandatory events, see Mandatory Events.


The called number screening service provides the following mandatory events:

  • SERVICE ERROR
  • NOT FOUND
  • SERVICE COMPLETED
  • CUSTOM LIST
  • SYSTEM LIST

For information on the service panel, refer to Service panel.

For information on procedures, refer to Service Handlers tab procedures.

ANSI ISUP Content Screening Service

The ANSI ISUP content screening service allows the messages and parameters defined by the ANSI ISUP protocol to be analyzed against user provisioned rules in order to determine the completeness and appropriateness of the messages and parameters.

For a detailed description of the service handlers tab, see the Overview section.

Information on the service handler instance components is available in the SS7 Database Applications Service Handler Instance Components.

Enable the ANSIISUPContScrSvc service in the right pane using Add a service to the service handler procedure.

For a detailed description of the mandatory events, see Mandatory Events.

The ANSI ISUP content screening service provides the following mandatory events:

  • SERVICE ERROR
  • UNSUPPORTED MESSAGE
  • SCREENING COMPLETE
  • MANDATORY FIXED PARAMETER ERROR
  • USER SERVCE INFORMATION ERROR
  • CALLED NUMBER ERROR
  • OPTIONAL PARAMETER SYNTAX ERROR
  • MANDATORY VARIABLE PART ERROR
  • IAM CALLING PARTY PRESENT
  • IAM CALLING PARTY ABSENT
  • IAM REDIRECTING NUMBER PRESENT
  • IAM REDIRECTING NUMBER ABSENT
  • IAM CARRIER IDENTIFICATION PRESENT
  • IAM CARRIER IDENTIFICATION ABSENT
  • IAM JURISDICTION INFORMATION PRESENT
  • IAM JURISDICTION INFORMATION ABSENT
  • IAM CHARGE NUMBER PRESENT
  • IAM CHARGE NUMBER ABSENT
  • UNKNOWN CALLED PARTY
  • UNKNOWN CALLING PARTY
  • UNKNOWN REDIRECTING NUMBER
  • UNKNOWN CARRIER IDENTIFICATION
  • UNKNOWN JURISDICTION INFORMATION
  • UNKNOWN CHARGE NUMBER

For information on the service panel, refer to Service panel. 

For information on procedures, refer to Service Handlers tab procedures.


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