| Pre-Subscription (SS7) | |||
| 4.5.7.1.1 | Inter-LATA Presubscription (SS7): Ported Number to Ported Number | X | |
| 4.5.7.1.2 | Inter-LATA Presubscription (SS7): Ported Number to Non-ported Number in an NPA-NXX Opened to Portability | ||
| 4.5.7.1.3 | Inter-LATA Presubscription (SS7): Ported Number to Number in an NPA-NXX Not Opened to Portability | X | |
| 4.5.7.1.4 | Inter-LATA Presubscription (SS7): Non-ported Number in an NPA-NXX Opened to Portability to Ported Number | ||
| 4.5.7.1.5 | Inter-LATA Presubscription (SS7): Non-ported Number in an NPA-NXX Opened to Portability to Non-ported Number in an NPA-NXX Opened to Portability | ||
| 4.5.7.1.6 | Inter-LATA Presubscription (SS7): Non-ported Number in an NPA-NXX Opened to Portability to Number in an NPA-NXX Not Opened to Portability | ||
| 4.5.7.1.7 | Inter-LATA Presubscription (SS7): Number in an NPA-NXX Not Opened to Portability to Ported Number | X | |
| 4.5.7.1.8 | Inter-LATA Presubscription (SS7): Number in an NPA-NXX Not Opened to Portability to Non-ported Number in an NPA-NXX Opened to Portability | X |
Last Updated on 10/4/97