Telecommunications network having successively utilized different network addresses to a single destination
US6377677B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 5, 1998 |
| Grant date | Apr 23, 2002 |
| Priority date | — |
| Expiry date | May 5, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q3/66
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
To provide secure communications to a PBX (20,22) the PBX is connected to two different local exchanges of the PSTN. On recognising a telephone number designating calls to the PBX service switching points (2) apply to service control points (8) for route translations. The SCP (8) directs calls though the network alternately to network connections on one DLE (say 1c) and then to the other DLE (1b). In the event of a predetermined number of call failure on one of the route all subsequent calls are directed to the other route until a predetermined number of call failures occur on the other route where upon consecutive calls are again offered alternately.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.