Emergency call system

US5337342A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Hans-Eckhard Kruger · Hildesheim, DE
• Harry Koch · Berlin, DE
• Jürgen Hartmann · Wesel, DE

Key dates

• Filing date: Sep 14, 1992
• Grant date: Aug 9, 1994
• Expiry date: Sep 14, 2012

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04W76/50
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

In order to simplify the use of a portable emergency call device to place calls on a public telephone network, the emergency call receiver for receiving an automated call code signal from the portable device is part of a cordless telephone installation at the premises of a telephone subscriber. That installation includes a memory of telephone numbers subscribers to be alerted to the presence of an emergency call, together with logic for sequencing calls to several subscribers in repeated sequence until one of them receives the emergency call.