2.6.4 TIF Range CgPN Blocklist Feature

The TIF Range CgPN Blocklist feature generates an ISUP Release (REL) message back to the originator of a processed ISUP IAM, based on the Calling Party Number (CgPN), if the following non-UDR-based scenarios occur:
  • The CgPN begins with a specific prefix.
  • The Calling Party parameter is not present in the IAM or it is present with no digits in it.

Two Service Action Data (SA Data) values can be associated with provisioned TIF CgPN Blocklist Service Actions to provide configurable Release Cause values for the Blocklist scenarios. The SAxVAL[1] value is used for ANSI ISUP and the SAxVAL[2] value is used for ITU ISUP.

TIF Range CgPN Blocklist provides the following functions:

  • Definition of feature-specific pre-NPP processing to be performed by TIF
  • Service Action specification (including Service Action names and precedence)
  • Service Action Handlers
  • Feature-specific post-NPP processing, if needed

TIF Range CgPN Blocklist Service Action Handlers

The TIF Range CgPN Blocklist feature provides feature-specific Service Action Handlers for NPP Service Actions. TIF and NPP perform NPP processing of Service Actions that are used for TIF Range CgPN Blocklist and post-NPP processing of the outgoing message.

The following table provides a summary of the Service Actions used specifically for TIF Range CgPN Blocklist.

Table 2-10 Summary of TIF Range CgPN Blocklist Service Actions

Service Action Description Function Precedence
FPFXRLS TIF CgPN Blocklist non-UDR Release Indicates that a Release (REL) will be generated if a matching Calling Party Rule is found in NPP. 92
NOCGPNRLS TIF CgPN Empty Release Indicates that a Release (REL) will be generated if the Calling Party parameter is not present in the ISUP IAM or it is present with no digits in it. 80

FPFXRLS Service Action Handler for TIF Prefix CgPN non-UDR-based RELEASE

The FPFXRLS Service Action Handler indicates that an REL will be sent to the originator of the IAM if a matching Calling Party Rule is found by NPP.

The FPFXRLS Service Action is mutually exclusive with all other Service Actions in the same Action Set.

Configuration Options Used

The provisioned SAxVAL[1] value contains the Release Cause value used in the REL for an IAM ISUP ANSI message; the provisioned SAxVAL[2] value contains the Release Cause value used in the REL for an IAM ISUP ITU message.

Action Performed

If the Calling Party prefix is found by NPP, the Service Action Handler indicates that an REL will be sent to the originator of the IAM during post-NPP processing. If the subscriber is marked as Blocklisted, the REL will contain the provisioned SAxVAL[1] value for the Release Cause if ANSI ISUP, or with the provisioned SAxVAL[2] value for the Release Cause if ITU ISUP. The REL will not include a Redirection Number. The original MSU is discarded.

If the TIF Range CgPN Blocklist feature is not turned ON , the Service Action Handler completes without any changes.

No Formatting Actions are populated.

Terminating Action?

Yes

NOCGPNRLS Service Action Handler for TIF Empty CgPN non-UDR-based RELEASE

The NOCGPNRLS Service Action Handler indicates that an REL will be sent to the originator of the IAM if the CgPN is not present in the IAM or the CgPN is present but has no digits in it.

Configuration Options Used

The provisioned SAxVAL[1] value contains the Release Cause value used in the REL for an IAM ISUP ANSI message; the provisioned SAxVAL[2] value contains the Release Cause value used in the REL for an IAM ISUP ITU message.

Action Performed

If CgPN digits are not present in the MSU, the Service Action Handler indicates that an REL will be sent to the originator of the IAM during post-NPP processing. If the subscriber is marked as Blocklisted, the REL will contain the provisioned SAxVAL[1] value for the Release Cause if ANSI ISUP, or with the provisioned SAx)AL[2] value for the Release Cause if ITU ISUP. The REL will not include a Redirection Number. The original MSU Is discarded.

If the TIF Range CgPN Blocklist feature is not turned ON or if the CgPN in the processed MSU contains digits, the Service Action Handler completes without any changes.

No Formatting Actions are populated.

Terminating Action?

Yes when the subscriber is Blocklisted.