Gateway Screening Actions

If a match is not found, the message is discarded.

If a match is found, the nsfi is examined to determine the next step in the screening process. If the nsfi value is any value other than stop, the next screening reference (nsr) is identified and the screening process continues to the next screen identified by the nsfi and nsr parameter values.

If the nsfi is equal to stop, the screening process stops and the message is processed. If a gateway screening stop action set is specified with the screen, shown by the actname parameter value, the message is processed according to the gateway screening stop actions that are assigned to the gateway screening stop action set.

• If the copy gateway screening stop action is specified, the message is processed and a copy of the message is sent by the STPLAN feature to an external application.
• If the rdct (redirect) gateway screening stop action is specified,the message is diverted from the original destination and sent to another destination with the Database Transport Access feature, specified by global title translation, for further processing.
• If the cncf gateway screening stop action is specified, the PIP parameter in the incoming ISUP IAM message is converted to the GN parameter. The GN parameter in the incoming ISUP IAM message is converted to the PIP parameter. The message is then sent to the node specified by the DPC in the routing label in the message. For more information on the Calling Name Conversion Facility feature, see Calling Name Conversion Facility (CNCF) Configuration.
• If the tlnp gateway screening stop action is specified, ISUP IAMs that pass gateway screening are processed either by the ISUP NP with EPAP feature (if the ISUP NP with EPAP feature is enabled and turned on) or by the Triggerless LNP feature (if the Triggerless LNP feature is turned on). The ISUP NP with EPAP feature is discussed in more detail in G-Port User's Guide. The Triggerless LNP feature is discussed in more detail in ELAP Administration and LNP Feature Activation Guide.
• If the tinp gateway screening stop action is specified, ISUP IAMs that pass gateway screening are intercepted by the Triggerless ISUP based Number Portability (TINP) feature and converted to include the routing number (RN) if the call is to a ported number. The TINP feature is discussed in more detail in G-Port User's Guide.
• If the tif, tif2, or tif3 gateway screening stop actions are specified, TIF processing is applied to the message.
• If the sccp gateway screening stop action is specified, MTP routed SCCP UDT/XUDT are forwarded to the service modules for further processing.