Station line switching control system
US5027341A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 1990 |
| Grant date | Jun 25, 1991 |
| Priority date | — |
| Expiry date | Mar 30, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M3/546
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A station controller for use in a telephone system includes a plurality of digital telephone stations comprising one or more multi-station pick up groups, each having a primary station and one or more associated secondary stations for picking up calls to the primary station. The secondary stations generate a pick up signal to initiate pick up of a call to the primary station and have indicating lights or the like. A centrex exchange is connected to a station controller through a digital carrier link and the station controller is connected to the telephone stations by digital links. The station controller includes a monitor for monitoring the status of each primary station and generating a status signal, and controls the status of the indicators of the secondary stations responsive to the status signals. Also provided are a first data store for sequentially storing incoming data groups from the carrier link, a second data store for sequentially storing incoming data groups from the digital links responsive to polling of such links, a translator for transferring data from the second storage corresponding to a secondary station to the carrier link responsive to a status signal indicat…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.