Apparatus and method for detecting the status of a PCM channel
US5732124A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1995 |
| Grant date | Mar 24, 1998 |
| Priority date | — |
| Expiry date | Dec 22, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B14/04
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An apparatus and method are provided for determining the activity status of a PCM channel in a telecommunications system. The method (600-680) and apparatus (400) utilize a codec (220) within the PCM channel which converts an analog signal to a digital signal and converts a digital signal to an analog signal. Within the apparatus (400), a memory register (402) is coupleable to the codec (220) to repeatedly obtain and store a digital byte of a plurality of digital bytes from the PCM channel. A processor (404) coupled to or containing the memory register (402) repeatedly, for a predetermined period of time, determine whether an ordered arrangement of bits of a digital byte has a predetermined bit pattern and accumulate a count of digital bytes having the predetermined bit pattern. The processor (404) then determines whether the accumulated count is greater than a predetermined value and provides a notification indicating the status of the PCM channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.