2.1.5.2 RN, SP, and DFLTRN Handling

The RN and SP values are set depending on the entity type retrieved from the Number Portability and the values of the NPTYPE configuration options for NP type (NPTYPERLY, NPTYPERLS and NPTYPECGPN) and the SPFILL and DFLTRN configuration options. The NPTYPE option isoptions for NP type are used as part of the matching criteria to determine when the Number Portability search is considered a success.

If a match is found and the Entity Type is RN, then RN digits are inserted into the outbound field.

If a match is found and the Entity Type is SP, then SP digits are inserted into the outbound field or the DFLTRN option digit string can be used instead of actual SP digits.

The DFLTRN and SPFILL configuration option allowsoptions allow a single digit string to be inserted instead of the actual SP digits to identify ‘in-network subscribers’. There may be different SPs in the Number Portability for use by G-Port or other vSTP features, but a single digit string is needed for TIF. The DFLTRN string is considered ‘routing digits’. When a DFLTRN string is provisioned, the RN Formatting Action is used to encode ‘routing digits’ (RN or DFLTRN) in the outbound digits. The SPFILL option is used to indicate how the SP is populated when DFLTRN is used for the RN. If the SPFILL option value is ON, Number Portability network entity digits are used for the SP. If the SPFILL option value is OFF, the SP is not populated.

The RN Formatting Action inserts the ’routing digits” into the outbound digits (either be the actual RN or the DFLTRN string).

The SP Formatting Action inserts the SP digits into the outbound digits.

Note:

If the IGM Feature is turned on, or the Service Portability feature is enabled, Entity Type is RN, and portability type (PT) is zero, then the Entity Type is treated as SP (in-network subscriber).

The following table summarizes the rules for determining the outbound RN and SP.

Table 2-2 Rules for Determining Outbound RN and SP

Case	NPTYPE	Number Portability Entity Type	DFLTRN	SPFILL	RN	SP
1	RN, RNSP, RNSPDN, ANY, ALL	RN	N/A	N/A	Entity data digits from the Number Portability	No data
2	SP	RN	N/A	N/A	No data	No data
3	RN	SP	N/A	N/A	No data	No data
4	SP, RNSP, RNSPDN, ANY, ALL	SP	Null	N/A	No data	Entity data digits from the Number Portability
5	SP, RNSP, RNSPDN, ANY, ALL	SP	Not Null	ON	DFLTRN	Entity data digits from the Number Portability
6	SP, RNSP, RNSPDN, ANY, ALL	SP	Not Null	OFF	DFLTRN	No data
6 7	SP, RN, RNSP, RNSPDN, ANY, ALL	Not RN, Not SP	N/A	N/A	No data	No data