Distributed processing telephone switching system
US4580011A · kind A · utility
Inventor
Key dates
| Filing date | Sep 30, 1983 |
| Grant date | Apr 1, 1986 |
| Priority date | — |
| Expiry date | Sep 30, 2003 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q3/5455
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A telephone switching system and method eliminates the need for high speed computers by employing a master controller having its own microprocessor to coordinate and control a tone controller, a switch controller, and a coupler controller, each of which has its own microprocessors and performs independent parts of the overall system control function. The master controller microprocessor interacts with each other controller microprocessor via a communication bus to segment the control functions into small independent operations which may be performed simultaneously. System call handling capacity can be increased by adding modular controller units to service added telephone lines. A solid state fully protected voice coupler is protected against voltage and current surges while meeting all relevant FCC specifications for connection to any voice transmitting and receiving equipment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.