Method for increasing
US5771236A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 10, 1996 |
| Grant date | Jun 23, 1998 |
| Priority date | — |
| Expiry date | Sep 10, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2213/13392
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An overhead bit-usurping multiplexing/demultiplexing mechanism increases the overall effective ISDN channel-conveying capacity of a serial digital data communication link, and thereby enables a terminal site channel bank to provide ISDN service to an additional number of customer premises equipments, other than the eight DSL channels normally accommodated within the twenty-four time slots of a (T1) TDM frame. Each condensed TDM DSL channel contains first and second multibit B information signal time slots, a multibit D information signal time slot, and a maintenance bit. No other auxiliary bits of a standard TR-NWT-000397 mode D+ octet are included, so that the compressed content TDM DSL channels have a smaller number of bits per channel than the standard TR-NWT-000397 format. As a result, when controllably interleaved with one another, the total number of TDM DSL channels (e.g., ten DSL channels) is larger than the eight DSL channels that would normally be accommodated within the twenty-four time slots of the TDM link.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.