Method and apparatus for recovering from a signalling failure in a switched connection data transmission network
US6292463A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 6, 1998 |
| Grant date | Sep 18, 2001 |
| Priority date | — |
| Expiry date | Jul 6, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2012/563
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The method of potentially recovering from a short term signalling failure in a switched connection data transmission network comprises the steps of: (a) establishing a unique, network-wide, identifier for each call; (b) incorporating the unique identifier in a call setup message transmitted to each network element in the path of the call; (c) linking the unique call identifier with each bearer channel cross-connect associated with the call; and (d) upon detection of a failure in a signalling network which affects the call, (i) actuating a timed release of the cross-connects, (ii) re-transmitting the call setup message, including the unique call identifier, to each network element involved in placing the call, (iii) re-linking the unique call identifier with the surviving cross-connects thereby reclaiming the cross-connects, and (iv) aborting the release of the cross-connects provided they have all been timely reclaimed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.