CA2241921A1 - An emergency back-up system for enhancing reliability of rescue - Google Patents

An emergency back-up system for enhancing reliability of rescue

Info

Publication number
CA2241921A1
CA2241921A1 CA2241921A CA2241921A CA2241921A1 CA 2241921 A1 CA2241921 A1 CA 2241921A1 CA 2241921 A CA2241921 A CA 2241921A CA 2241921 A CA2241921 A CA 2241921A CA 2241921 A1 CA2241921 A1 CA 2241921A1
Authority
CA
Canada
Prior art keywords
call
rescue
phone
dispatch office
termination
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA2241921A
Other languages
French (fr)
Other versions
CA2241921C (en
Inventor
Robert K. Tendler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tendler Cellular Inc
Original Assignee
Tendler Cellular, Inc.
Robert K. Tendler
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tendler Cellular, Inc., Robert K. Tendler filed Critical Tendler Cellular, Inc.
Publication of CA2241921A1 publication Critical patent/CA2241921A1/en
Application granted granted Critical
Publication of CA2241921C publication Critical patent/CA2241921C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/04—Telephonic communication systems specially adapted for combination with other electrical systems with alarm systems, e.g. fire, police or burglar alarm systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/90—Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/50—Connection management for emergency connections

Abstract

A system is provided for enhancing the reliability of rescue services by providing a 911 back-up system in which the termination of an emergency call is sensed followed by dialing the telephone number of a predetermined dispatch office (30), with the dispatch office (30) providing a call back to the nearest PSAP (28) to ascertain whether or not rescue is on the way. In one embodiment for cellular phone applications, termination of the emergency call is sensed by detecting the call-in-progress flag (20) available on the phone's bus. In another embodiment, the originating phone (10) transmits the telephone number of the originating phone to permit personnel at the dispatch office (30) to call the originating phone back to ascertain the nature of the problem and if dispatched help has arrived.
CA002241921A 1996-02-09 1996-11-01 An emergency back-up system for enhancing reliability of rescue Expired - Fee Related CA2241921C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/600,345 US5598460A (en) 1996-02-09 1996-02-09 Emergency back-up system for enhancing reliability or rescue
US600,345 1996-02-09
PCT/US1996/017392 WO1997029600A1 (en) 1996-02-09 1996-11-01 An emergency back-up system for enhancing reliability of rescue

Publications (2)

Publication Number Publication Date
CA2241921A1 true CA2241921A1 (en) 1997-08-14
CA2241921C CA2241921C (en) 1999-12-14

Family

ID=24403231

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002241921A Expired - Fee Related CA2241921C (en) 1996-02-09 1996-11-01 An emergency back-up system for enhancing reliability of rescue

Country Status (9)

Country Link
US (1) US5598460A (en)
EP (1) EP0873659A4 (en)
JP (1) JP2001503923A (en)
CN (1) CN1209253A (en)
AU (1) AU710319B2 (en)
CA (1) CA2241921C (en)
IL (1) IL125601A0 (en)
NZ (1) NZ321488A (en)
WO (1) WO1997029600A1 (en)

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Also Published As

Publication number Publication date
WO1997029600A1 (en) 1997-08-14
AU7483396A (en) 1997-08-28
EP0873659A4 (en) 1999-03-31
JP2001503923A (en) 2001-03-21
EP0873659A1 (en) 1998-10-28
IL125601A0 (en) 1999-03-12
CA2241921C (en) 1999-12-14
US5598460A (en) 1997-01-28
NZ321488A (en) 1999-11-29
AU710319B2 (en) 1999-09-16
CN1209253A (en) 1999-02-24

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