Triggerless number portability system and method
US6456708B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 12, 1999 |
| Grant date | Sep 24, 2002 |
| Priority date | — |
| Expiry date | Nov 12, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q3/005
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method of providing local number portability capability includes the steps of capturing all initial address message transmitted on at least one predetermined SS7 link set to a signal transfer point, where each initial address message has a called party number parameter containing a dialed telephone number. A determination is made as to whether a predetermined FCI bit is set to one or zero and in response to the predetermined FCI bit being set to zero, the following steps are performed. A local number portability database lookup is done using the dialed telephone number to obtain a corresponding local routing number. The local routing number is then inserted into the called party number parameter of the initial address message, and the dialed telephone number is inserted into a generic address parameter of the initial address message. The predetermined FCI bit is then set to one. The initial address message is then sent to a destination specified by the called party number parameter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.