AU2531388A - Telephone accessory - Google Patents

Telephone accessory

Info

Publication number
AU2531388A
AU2531388A AU25313/88A AU2531388A AU2531388A AU 2531388 A AU2531388 A AU 2531388A AU 25313/88 A AU25313/88 A AU 25313/88A AU 2531388 A AU2531388 A AU 2531388A AU 2531388 A AU2531388 A AU 2531388A
Authority
AU
Australia
Prior art keywords
telephone accessory
accessory
telephone
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.)
Abandoned
Application number
AU25313/88A
Inventor
Alan Baber
David Stuart Griffith
Kevin Rhys 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.)
Individual
Original Assignee
Individual
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
Priority claimed from GB878722520A external-priority patent/GB8722520D0/en
Priority claimed from GB888804268A external-priority patent/GB8804268D0/en
Application filed by Individual filed Critical Individual
Publication of AU2531388A publication Critical patent/AU2531388A/en
Abandoned legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
    • H04M19/04—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone the ringing-current being generated at the substations

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
AU25313/88A 1987-09-24 1988-09-23 Telephone accessory Abandoned AU2531388A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB878722520A GB8722520D0 (en) 1987-09-24 1987-09-24 Telephone accessory
GB8722520 1987-09-24
GB888804268A GB8804268D0 (en) 1988-02-24 1988-02-24 Telephone accessory
GB8804268 1988-02-24

Publications (1)

Publication Number Publication Date
AU2531388A true AU2531388A (en) 1989-04-18

Family

ID=26292781

Family Applications (1)

Application Number Title Priority Date Filing Date
AU25313/88A Abandoned AU2531388A (en) 1987-09-24 1988-09-23 Telephone accessory

Country Status (3)

Country Link
EP (1) EP0391918A1 (en)
AU (1) AU2531388A (en)
WO (1) WO1989003147A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU650859B2 (en) * 1990-01-31 1994-07-07 Nec Corporation Ringing circuit for use in portable telephone set

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE9102980L (en) * 1991-10-14 1993-04-15 Ericsson Ge Mobile Communicat DEVICE FOR SOUND LEVEL DISCONNECTION OR OPERATING ALERTS
CA2106342C (en) * 1992-09-29 1997-01-21 Michael J. Schellinger Alert method for cordless telephones

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4103106A (en) * 1976-09-13 1978-07-25 Sechan Charles J Mobile radiotelephone apparatus and method
US4315109A (en) * 1979-11-20 1982-02-09 Sava Jacobson Electronic ring sounder for a speaker telephone
US4467144A (en) * 1982-04-08 1984-08-21 Amf Incorporated Telephone annuciator extender
SE456387B (en) * 1983-03-31 1988-09-26 Claes Lorentz Uno Persson SET TO PAVER A SOUND CELL FOR PHONE CALLS AND DEVICE FOR EXTENDING THE SET
US4480153A (en) * 1983-04-04 1984-10-30 Festa Lawrence M Musical-output adapter for telephones
US4578542A (en) * 1984-05-07 1986-03-25 Alderman Robert J Line powered flasher circuit for ringing signal
US4599494A (en) * 1984-10-10 1986-07-08 Motorola, Inc. Ring sense telephone tone ringer circuit
CN85103135A (en) * 1985-04-29 1986-12-24 刘忠笃 Circuit of telephone bell with electronic music

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU650859B2 (en) * 1990-01-31 1994-07-07 Nec Corporation Ringing circuit for use in portable telephone set

Also Published As

Publication number Publication date
EP0391918A1 (en) 1990-10-17
WO1989003147A1 (en) 1989-04-06

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