Patent · US Expired

Private branch exchange having a central control unit and a mobile control unit subordinate thereto

US5544226A · kind A · utility

24Cited by

4References

13Claims

0Family size

Assignee

Alcatel N.V. · NL

Inventors

Bernd Weis · Ditzingen, DE
Karl-Albert Turban · Leonberg, DE
Monika Bezler · Stuttgart, DE
Manfred Schulz · Jeffery Road, DE
Gerd Siegmund · Stuttgart, DE

Key dates

Filing date	Sep 11, 1995
Grant date	Aug 6, 1996
Priority date	—
Expiry date	Sep 11, 2015

Classification

Technology area (CPC H)Electricity
CPC primaryH04W84/16
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A private branch exchange (PABX) with an integrated mobile part for controlling cordless terminals (HS) is established, which can be operated from base stations (BS). The private branch exchange (PABX) contains freely configurable interface modules (I/F) for wired (DE) and cordless (HS) terminals, which can be operated from a base station (BS). A central control unit (PABX-CPU) is provided to control all call handling and service feature control tasks, and a subordinate control unit (Mobile-CPU) for call setup and switch-off control of the cordless terminals (HS) in accordance with a set of assigned call numbers. The control units (PABX-CPU, Mobile-CPU) and the interface modules (I/F) are connected with each other through a bus system (BUS).

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