1.4 TIF Services That Call NPP

For TIF services, NPP processes traffic filtered by the corresponding MTP Screening Stop Action, as shown in the following table:

Table 1-4 MTP Screening Stop Action Mapping to CdPN Service Name to CgPN Service Name

MTP Screening Stop Action	NPP CdPN Service Name	NPP CgPN Service Name
TIF	TIF	TIFCGPN
TIF2	TIF2	TIFCGPN2
TIF3	TIF3	TIFCGPN3

The services for TIF features allow NPP Rules to be defined for handling different types of traffic, such as inter-carrier traffic and local traffic.

NPP processing for a TIF CdPN service can invoke the corresponding TIF CgPN service, depending on the value of the INVKSERV parameter in the TIF CdPN Service Rule.

For example, if the MSU was filtered by the TIF2 MTP Stop Action, the TIF2 NPP service is invoked using the CdPN in the message. If the INVKSERV value in the matched TIF2 NPP Service Rule is TIFCGPN2, then the TIFCGPN2 NPP service is invoked using the CgPN in the message.

Table 1-5 NPP Service Name to MTP Screening Stop Action Mapping

TIF Service Name	MTP Screening Stop Action Name
TIF	TIF
TIF2	TIF2
TIF3	TIF3