Method for accommodating ported directory numbers affected by call block controls implemented in a telecommunications network
US5896447A · kind A · utility
2Cited by
2References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 17, 1996 |
| Grant date | Apr 20, 1999 |
| Priority date | — |
| Expiry date | Oct 17, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M3/42297
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method for implementing all blocking controls in a telecommunications system supporting ported directory numbers comprises initializing each switch with a call blocking control. In the preferred embodiment, ported directory numbers are identified, and a number portability data base is accessed to aid in determining whether the call blocking control applies to the ported directory number. If the ported directory number is not subject to the implemented call blocking control, the ported directory number is exempted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.