Call failure recording
US7502447B2 · kind B2 · utility
6Cited by
8References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 25, 2003 |
| Grant date | Mar 10, 2009 |
| Priority date | — |
| Expiry date | Dec 9, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M3/36
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method and device for recording call failure information in a data transmission system is provided. The failure logs generated in response to a failure event include a failure type and a first timestamp. A log record is created for a first failure log based on the failure type, and storied in a log record storage. Whenever a further failure log is generated in response to the same failure event, the further failure log includes said failure type and a current timestamp, so that it will receive the same identifier. The log record is updated to document the current timestamp.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.