Four-wire, half-rate architecture with embedded differential delay compensation for extending range of basic rate
US5598413A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 10, 1995 |
| Grant date | Jan 28, 1997 |
| Priority date | — |
| Expiry date | Jul 10, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2213/1336
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
To extend the transmission distance for basic rate integrated services digital network (ISDN) communications between a first site and a second site, the basic rate ISDN channel is demultiplexed onto a pair of half-rate digital subscriber loop channels, which employ an out of band maintenance channel to convey differential delay compensation information, but without modifying the framing structure of the transported channels, or requiring additional bandwidth for a separate framing channel. Halving the data rate, to increase the distance over which the basic rate ISDN channel may be transported, operates as a trade-off against loop loss, while still complying with ANSI standards.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.