Interface arrangement for providing
US5719870A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 17, 1995 |
| Grant date | Feb 17, 1998 |
| Priority date | — |
| Expiry date | Oct 17, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2213/13335
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Full channel service is obtained over a modified ISDN BRI interface by emulating at least one central office (CO) station terminal which provides access to a voice channel over a single digital subscriber line DSL for user station terminals whether or not they are ISDN BRI compatible. To this end, an interface is provided for the DSL that emulates an ISDN BRI CO station terminal and acts like a facility to user station terminals. More specifically, a plurality of CO station terminals are emulated on a single multi-point passive bus terminating the single DSL. Each of the emulated CO station terminals presents to the CO switching office the appearance of being a CO station terminal. The emulated CO station terminals are configured such that CO features are accessible. Information from the emulated CO station terminals is mapped into existing system structures where such structures are available and compatible with the information from the emulated terminal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.