Patent · US Expired

Modular subscriber device

US5521976A · kind A · utility

5Cited by
2References
4Claims
0Family size

Assignee

Inventors

Key dates

Filing dateSep 14, 1994
Grant dateMay 28, 1996
Priority date
Expiry dateSep 14, 2014

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH04Q3/625
  • WIPO fieldTelecommunications
  • WIPO sectorElectrical engineering

Abstract

The device is a subscriber apparatus with one or more modules interconnected by a bi-directional bus which communicates both digital and analog signals. The module perform different telecommunication functions, such as telephone, telefax, etc. Each module includes storage with a module-specific control program. The control unit may control the whole subscriber apparatus. When a new module is connected to the bus, an identification is assigned thereto which further determines the start address for the module-specific control program.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.