Subscriber multiplexer, a telephone system and a method for communicating the condition of a subcriber interface
US5974030A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 13, 1996 |
| Grant date | Oct 26, 1999 |
| Priority date | — |
| Expiry date | Dec 13, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J3/14
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A subscriber multiplexer includes a receiver for receiving signals transmitted from subscriber interfaces a feeder and for feeding those signals further to a telephone exchange via a respective PCM connection, and a feeder for feeding signals transmitted from the telephone exchange via the respective PCM connection further to the subscriber interfaces. For detecting the condition of the subscriber interfaces, the subscriber multiplexer includes measuring devices for checking the condition of the subscriber interface of the subscriber multiplexer, and a controller for activating the measuring devices in response to a measurement request signal transmitted by the telephone exchange via the respective PCM connection to achieve a measurement result, and for transmitting a message describing the measurement result to the telephone exchange to a telephone system and a method for communicating the condition of a subscriber interface of a subscriber multiplexer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.