Integrated services digital network (
US4998248A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 25, 1989 |
| Grant date | Mar 5, 1991 |
| Priority date | — |
| Expiry date | May 25, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S379/908
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An integrated services digital network (ISDN) system has an ISDN; and a plurality of media equipments, including at least one media device, connected with the ISDN through subscriptor lines, at least one of the media equipments including a plurality of media devices. Each of the media equipments comprises: communication control device connected with corresponding one of the subscriptor lines, for controlling the connection of the media devices within the relevant media equipment with the subscriptor line and at the same time transmitting and receiving data on the subscriptor line; and a data file storing a first identification mark for identifying the relevant media equipment and second identification marks for identifying the media devices within the relevant media equipment and also storing a first identification mark for identifying at least another media equipment and second identification marks for identifying media devices within said another media equipment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.