Remote digital carrier alarm and terminal by-pass system
US4759009A · kind A · utility
13Cited by
4References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 8, 1985 |
| Grant date | Jul 19, 1988 |
| Priority date | — |
| Expiry date | Jul 8, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J3/085
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A T1 digital carrier system having a master terminal and four serially coupled remote terminals. Each remote terminal has a by-pass switch for automatically by-passing that remote terminal should a service threatening condition exist therein, thereby maintaining service to all remaining remote terminals. In addition, major and minor alarm information (indicating service requiring conditions) is transmitted by each remote terminal during signaling frames in the T1 serial bit stream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.