Device for performing wrap tests on a multiplex link in a data communication system
US4695997A · kind A · utility
5Cited by
3References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 14, 1985 |
| Grant date | Sep 22, 1987 |
| Priority date | — |
| Expiry date | Jun 14, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J3/14
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
In a data communication system, a device for performing a wrap test on at least one line without affecting the other lines that transmit and receive data over at least one multiplex link (4) within time slots allocated to a given line within a given frame. During each time slot, a wrap control bit (W) is set by the communication system to a state that indicates either the wrap test mode or the normal mode of operation. Said bit controls a logic circuit (51) to cause data to be sent either over line (4) or to the receive circuit to perform the test, within each time slot.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.