Modular digital telephone system and method including an universal telephony shelf
US6330328A · kind A · utility
1Cited by
13References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 28, 1998 |
| Grant date | Dec 11, 2001 |
| Priority date | — |
| Expiry date | Aug 28, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2213/1336
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A modular digital telephone system and method featuring a universal telephony shelf adaptable for incremental expansion of legacy telephone switches and as a building block in the construction of new telephony switches. The shelf includes identification and connectors for shelf pairing, and is adapted to receive redundant power supplies, plural line cards, and either a peripheral shelf interface unit or a switch array card which provides both a local shelf interface and three interface units for connection to the peripheral interface units of other shelves. System wide fault displays are provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.