2.2.7 TIF NS Service Action Handlers
TIF NS provides Service Action Handlers for the NPP
Service Actions that are specific to TIF NS. TIF and NPP perform the following
functions for the TIF NS feature:
- Number Portability lookup
- Interpretation of results from Number Portability lookups
- NPP processing of Service Actions that are used for TIF NS
The following table provides a summary of the Service Actions used specifically for TIF NS.
Table 2-5 Summary of TIF NS Service Actions
| Service Action | Description | Function | Precedence |
|---|---|---|---|
| NSCdPN | Called Number Substitution | Performs an Number Portability lookup on the CdPN; if the lookup is successful, replaces the outgoing CdPN. | 80 |
| NSCgPN | Calling Number Substitution | Performs an Number Portability lookup on the CgPN. if the lookup is successful, replaces the outgoing CgPN. | 75 |