Method and apparatus for providing local number portability
US5598464A · kind A · utility
141Cited by
13References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 20, 1995 |
| Grant date | Jan 28, 1997 |
| Priority date | — |
| Expiry date | Jun 20, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2213/13547
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A system (10) includes a calling party (12) that initiates a call to a ported customer (14). Upon receiving the call from calling party (12), switch (16) generates a trigger indicating that ported customer (14) is now being serviced by another switch (20). Switch (16) transfers the call to a service node (22) that includes a database (28) containing routing information. Service node (22) routes the call to switch (20) now providing service to ported customer (14). Several variations of calls to ported customer (14) are described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.