Detecting high usage telecommunications lines
US5905785A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 23, 1997 |
| Grant date | May 18, 1999 |
| Priority date | — |
| Expiry date | Jan 23, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M7/12
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
High usage lines in a telecommunications system must be detected to avoid local areas of high call blockage. Such high usage lines are frequently lines that originate or receive data calls. The presence of a data call is detected by testing for a signal, such as a tone, on the call connection after an answer signal has been detected, and testing to see if the duration of the call exceeds some predetermined quantity. Lines which originate or receive data calls exceeding the predetermined quantity are then monitored to measure their usage. Advantageously, many high usage lines can be detected by monitoring only the relatively few lines that originate or receive data calls.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.