1. Virtual Signaling Transfer Point User Guide
  2. vSTP Features
  3. Support for CAP/INAP Parameter Filtering
  4. Feature Description
  5. SK+BCSM Based Filtering

2.21.1.2 SK+BCSM Based Filtering

vSTP supports the SK+BCSM based filtering. The GTT set type is set as SKBCSM and it is linked with the OPTSN of an INAP based OPCODE/MBR set type GTA entry.

Once the MSU is processed, filtering is done for CDPAGTA followed by the filtering for OPCODE, and then if OPTSN is set as SKBCSM and the message contains SK and BCSM portion, digits are decoded and are looked up in Global Title Addresses table, where message is translated and sent to the configured Point Code (RSP).

For allowing any SK+BCSM entry, ‘*’ can be used as an wildcard entry for both SK and BCSM.

The SK+BCSM decoding is supported for the following INAP messages:
  • IDP
  • IDPSMS
  • IDPGPRS
where, SK is Service Key component and BCSM for IDP, IDPSMS, and IDPGPRS are eventTypeBCSM, EventTypeSMS, and GPRSEventType components respectively.

Call Flow

The following diagram shows a call flow for SK BCSM based filtering:

Figure 2-16 Call Flow for SK BCSM Based Filtering

Call Flow for SK BCSM Based Filtering