Electronic digital PCM time-division exchange with decentralized architecture
US4567589A · kind A · utility
10Cited by
3References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 24, 1983 |
| Grant date | Jan 28, 1986 |
| Priority date | — |
| Expiry date | Oct 24, 2003 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q11/04
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A PCM time division exchange with decentralized processing having a central processing unit connected by means of a switching network to several racks, each rack has a message microcontroller and several port cards. The message microcontroller is responsible for the signal dialogue between the different ports and it exchanges telephone messages with the central processing unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.