GB2206017B - Emergency call system - Google Patents

Emergency call system

Info

Publication number
GB2206017B
GB2206017B GB8813554A GB8813554A GB2206017B GB 2206017 B GB2206017 B GB 2206017B GB 8813554 A GB8813554 A GB 8813554A GB 8813554 A GB8813554 A GB 8813554A GB 2206017 B GB2206017 B GB 2206017B
Authority
GB
United Kingdom
Prior art keywords
emergency call
call system
emergency
call
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.)
Expired - Lifetime
Application number
GB8813554A
Other versions
GB8813554D0 (en
GB2206017A (en
Inventor
David Jones
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.)
Tunstall Telecom Ltd
Original Assignee
Tunstall Telecom Ltd
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 Tunstall Telecom Ltd filed Critical Tunstall Telecom Ltd
Publication of GB8813554D0 publication Critical patent/GB8813554D0/en
Publication of GB2206017A publication Critical patent/GB2206017A/en
Application granted granted Critical
Publication of GB2206017B publication Critical patent/GB2206017B/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
    • G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
    • G08B25/014—Alarm signalling to a central station with two-way communication, e.g. with signalling back

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Alarm Systems (AREA)
GB8813554A 1987-06-09 1988-06-08 Emergency call system Expired - Lifetime GB2206017B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB878713461A GB8713461D0 (en) 1987-06-09 1987-06-09 Emergency call system

Publications (3)

Publication Number Publication Date
GB8813554D0 GB8813554D0 (en) 1988-07-13
GB2206017A GB2206017A (en) 1988-12-21
GB2206017B true GB2206017B (en) 1991-03-27

Family

ID=10618615

Family Applications (2)

Application Number Title Priority Date Filing Date
GB878713461A Pending GB8713461D0 (en) 1987-06-09 1987-06-09 Emergency call system
GB8813554A Expired - Lifetime GB2206017B (en) 1987-06-09 1988-06-08 Emergency call system

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB878713461A Pending GB8713461D0 (en) 1987-06-09 1987-06-09 Emergency call system

Country Status (1)

Country Link
GB (2) GB8713461D0 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2644917A1 (en) * 1989-03-23 1990-09-28 Grand Patrice Collective surveillance device
US5589818A (en) * 1993-08-27 1996-12-31 Queen; Andrew Personal response system with remotely adjustable microphone sensitivity
IT1274517B (en) * 1995-05-17 1997-07-17 Aurelio Cattaneo COMMUNICATION AND ALARM SYSTEM, TO CONNECT TEMPORARILY, AT A SHORT DISTANCE, PORTABLE RADIO TRANSCEIVERS WITH A DOOR PHONE SYSTEM

Also Published As

Publication number Publication date
GB8813554D0 (en) 1988-07-13
GB8713461D0 (en) 1987-07-15
GB2206017A (en) 1988-12-21

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19930608