ZA731352B - Improvements in or relating to telephones - Google Patents

Improvements in or relating to telephones

Info

Publication number
ZA731352B
ZA731352B ZA731352A ZA731352A ZA731352B ZA 731352 B ZA731352 B ZA 731352B ZA 731352 A ZA731352 A ZA 731352A ZA 731352 A ZA731352 A ZA 731352A ZA 731352 B ZA731352 B ZA 731352B
Authority
ZA
South Africa
Prior art keywords
telephones
relating
Prior art date
Application number
ZA731352A
Other languages
English (en)
Inventor
A Lawson
C Tabalba
Original Assignee
Standard Telephones Cables 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 Standard Telephones Cables Ltd filed Critical Standard Telephones Cables Ltd
Publication of ZA731352B publication Critical patent/ZA731352B/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/26—Devices for calling a subscriber
    • H04M1/30—Devices which can set up and transmit only one digit at a time
    • H04M1/31—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses
    • H04M1/312—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses pulses produced by electronic circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Telephone Set Structure (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Meter Arrangements (AREA)
  • Telephonic Communication Services (AREA)
ZA731352A 1972-05-11 1973-02-27 Improvements in or relating to telephones ZA731352B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2213172A GB1395577A (en) 1972-05-11 1972-05-11 Telephones

Publications (1)

Publication Number Publication Date
ZA731352B true ZA731352B (en) 1973-11-28

Family

ID=10174396

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA731352A ZA731352B (en) 1972-05-11 1973-02-27 Improvements in or relating to telephones

Country Status (12)

Country Link
US (1) US3856982A (es)
JP (1) JPS5830783B2 (es)
BE (1) BE799392A (es)
CA (1) CA977479A (es)
CH (1) CH568690A5 (es)
DE (1) DE2323559B2 (es)
ES (1) ES414647A1 (es)
FR (1) FR2184107B1 (es)
GB (1) GB1395577A (es)
IE (1) IE37408B1 (es)
IT (1) IT987335B (es)
ZA (1) ZA731352B (es)

Families Citing this family (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT977993B (it) * 1973-01-03 1974-09-20 Sits Soc It Telecom Siemens Tastiera di selezione elettroni ca per apparecchi telefonici con emissione di impulsi decadici intercambiabile con il disco com binatore
US3956596A (en) * 1973-04-10 1976-05-11 The General Electric Company Limited Circuit arrangements in telephone apparatus
GB1515503A (en) * 1974-01-15 1978-06-28 Gen Electric Co Ltd Electric impulse transmitters for telephone instruments
SE386341B (sv) * 1974-03-29 1976-08-02 Ericsson Telefon Ab L M Kopplingsanordning vid en telefonapparat innefattande en likspenningsomvandlare.
GB1492542A (en) * 1974-04-03 1977-11-23 Gte International Inc Telephone intercommunication system incorporating dialling arrangement
GB1505253A (en) * 1974-04-30 1978-03-30 Gen Electric Telephone apparatus
CH580370A5 (es) * 1974-05-20 1976-09-30 Stoppani Sa
US4008379A (en) * 1975-02-14 1977-02-15 San/Bar Corporation Touch-pad to dial conversion unit
US4012601A (en) * 1975-04-04 1977-03-15 Texas Instruments Incorporated Automatic pushbutton dial assembly for a subscriber telephone
US4012600A (en) * 1975-04-04 1977-03-15 Texas Instruments Incorporated Automatic pushbutton dial system for a subscriber telephone
US4011414A (en) * 1975-04-04 1977-03-08 Texas Instruments Incorporated Automatic dial system for a subscriber telephone
US3982079A (en) * 1975-04-16 1976-09-21 Litton Business Telephone Systems, Inc. Touch-to-rotary converter for a telephone instrument
DE2522957C3 (de) * 1975-05-23 1978-06-15 Siemens Ag, 1000 Berlin Und 8000 Muenchen Schaltungsanordnung für über ihre Anschlußleitungen gespeiste Teilnehmerstationen mit Impulstastwahl in Fernmelde-, insbesondere Fernsprechanlagen
DE2541903C3 (de) * 1975-09-19 1979-09-06 Siemens Ag, 1000 Berlin Und 8000 Muenchen Schaltungsanordnung für über ihre AnschluBleitiuigen gespeiste Teilnehmerstationen mit Impulstastwahl in Fernmelde-, insbesondere Fernsprechanlagen
US4059728A (en) * 1976-06-01 1977-11-22 American Communication Systems Touchpad dialer for mobile telephones
JPS5315007A (en) * 1976-07-27 1978-02-10 Nitsuko Ltd Pushhbutton telephone set
JPS5316506A (en) * 1976-07-30 1978-02-15 Nitsuko Ltd Automatic dialling device
DE2848986C3 (de) * 1976-09-15 1981-10-08 Krone Gmbh, 1000 Berlin Schaltungsanordnung für einen Fernsprechapparat mit Wähltastatur nach dem Impulswahl-Verfahren
JPS5338909A (en) * 1976-09-21 1978-04-10 San Terehon Kk Pushhbutton dial telephone system
CH620559A5 (es) * 1977-09-12 1980-11-28 Sodeco Compteurs De Geneve
US4167655A (en) * 1977-10-17 1979-09-11 United Networks Inc. Push button to rotary dial converter systems
US4232200A (en) * 1978-10-23 1980-11-04 United Networks, Inc. Dialing system
US4329541A (en) * 1980-05-14 1982-05-11 Gerber Jr Robert F Dialing system for teleprinter
US4775997A (en) * 1984-09-18 1988-10-04 Metrofone, Inc. System for interfacing a standard telephone set with a radio transceiver
US4922517A (en) * 1987-04-08 1990-05-01 Metrofone, Inc. System for interfacing a standard telephone set with a radio transceiver
JP2782053B2 (ja) * 1995-03-23 1998-07-30 本田技研工業株式会社 レーダーモジュール及びアンテナ装置
US5884148A (en) * 1996-07-08 1999-03-16 Omnipoint Corporation Wireless local loop system and method
US5913176A (en) * 1997-04-14 1999-06-15 Jrc Canada Inc. System for virtual connection to dedicated PSTN lines
US6526026B1 (en) 1997-12-10 2003-02-25 Intel Corporation Digit transmission over wireless communication link
US6580906B2 (en) * 1997-12-10 2003-06-17 Intel Corporation Authentication and security in wireless communication system
US6208627B1 (en) 1997-12-10 2001-03-27 Xircom, Inc. Signaling and protocol for communication system with wireless trunk
US6097817A (en) * 1997-12-10 2000-08-01 Omnipoint Corporation Encryption and decryption in communication system with wireless trunk
US8165028B1 (en) 1997-12-10 2012-04-24 Intel Corporation Monitoring in communication system with wireless trunk

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB908052A (en) * 1960-03-11 1962-10-10 Ass Elect Ind Improvements relating to electrical storage arrangements
DE1201417B (de) * 1964-07-10 1965-09-23 Standard Elektrik Lorenz Ag Tonfrequentes Tastwahlverfahren ohne Gleichstrom-Wahlbegleitzeichen in Fernmelde-, insbesondere Fernsprechanlagen und Schaltungsanordnung zur Durchfuehrung des Verfahrens
FR1493431A (fr) * 1965-12-22 1967-09-01 Radiotechnique Coprim Rtc Perfectionnements aux postes téléphoniques à clavier
GB1236961A (en) * 1968-01-12 1971-06-23 Gen Electric Co Ltd Improvements in or relating to electric impulse transmitters
BE758187A (fr) * 1969-11-13 1971-04-29 Cit Alcatel Dispositif emetteur de signaux en particulier pour clavier de numerotation
DE2043611A1 (de) * 1970-09-03 1972-03-09 Tn Ladeschaltung für Kondensatoren am Ende einer, nur geringe Leistung über tragenden Leitung in Fernmeldeanlagen
DE2048148A1 (de) * 1970-09-30 1972-04-06 Siemens Ag Schaltungsanordnung für Fernmelde-, insbesondere Fernsprechanlagen mit einem als örtliche Betriebsspannungsquelle dienenden Kondensator
FR2114075A5 (es) * 1970-11-16 1972-06-30 Cit Alcatel
US3787639A (en) * 1972-11-16 1974-01-22 Northern Electric Co Pushbutton electronic pulsing dial

Also Published As

Publication number Publication date
JPS5830783B2 (ja) 1983-07-01
GB1395577A (en) 1975-05-29
JPS4949508A (es) 1974-05-14
IE37408L (en) 1973-11-11
CA977479A (en) 1975-11-04
DE2323559A1 (de) 1973-11-22
CH568690A5 (es) 1975-10-31
IT987335B (it) 1975-02-20
US3856982A (en) 1974-12-24
BE799392A (fr) 1973-11-12
DE2323559B2 (de) 1979-03-29
ES414647A1 (es) 1976-06-01
AU5509573A (en) 1974-11-07
FR2184107A1 (es) 1973-12-21
FR2184107B1 (es) 1976-06-11
IE37408B1 (en) 1977-07-20

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