FR2165649A5 - - Google Patents

Info

Publication number
FR2165649A5
FR2165649A5 FR7245702A FR7245702A FR2165649A5 FR 2165649 A5 FR2165649 A5 FR 2165649A5 FR 7245702 A FR7245702 A FR 7245702A FR 7245702 A FR7245702 A FR 7245702A FR 2165649 A5 FR2165649 A5 FR 2165649A5
Authority
FR
France
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
Application number
FR7245702A
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 International Standard Electric Corp filed Critical International Standard Electric Corp
Application granted granted Critical
Publication of FR2165649A5 publication Critical patent/FR2165649A5/fr
Expired legal-status Critical Current

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
    • 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
    • H04M1/515—Devices for calling a subscriber by generating or selecting signals other than trains of pulses of similar shape, or signals other than currents of one or more different frequencies, e.g. generation of dc signals of alternating polarity, coded pulses or impedance dialling

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Telephonic Communication Services (AREA)
  • Exchange Systems With Centralized Control (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Electronic Switches (AREA)
  • Selective Calling Equipment (AREA)
FR7245702A 1971-12-23 1972-12-21 Expired FR2165649A5 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5992771A GB1369829A (en) 1971-12-23 1971-12-23 Electric impulse transmitters

Publications (1)

Publication Number Publication Date
FR2165649A5 true FR2165649A5 (fr) 1973-08-03

Family

ID=10484670

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7245702A Expired FR2165649A5 (fr) 1971-12-23 1972-12-21

Country Status (8)

Country Link
AU (1) AU470553B2 (fr)
DE (1) DE2262505C2 (fr)
ES (1) ES409985A1 (fr)
FR (1) FR2165649A5 (fr)
GB (1) GB1369829A (fr)
IE (1) IE37079B1 (fr)
IT (1) IT972579B (fr)
ZA (1) ZA728043B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2466161A1 (fr) * 1979-09-25 1981-03-27 Ericsson Telefon Mij Dispositif d'intercommunication telephonique
FR2501938A1 (fr) * 1981-03-13 1982-09-17 Constr Telephoniques Circuit conformateur de signaux

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1236961A (en) * 1968-01-12 1971-06-23 Gen Electric Co Ltd Improvements in or relating to electric impulse transmitters

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2466161A1 (fr) * 1979-09-25 1981-03-27 Ericsson Telefon Mij Dispositif d'intercommunication telephonique
FR2501938A1 (fr) * 1981-03-13 1982-09-17 Constr Telephoniques Circuit conformateur de signaux

Also Published As

Publication number Publication date
IE37079L (en) 1973-06-23
IT972579B (it) 1974-05-31
AU470553B2 (en) 1976-03-18
AU4959672A (en) 1974-06-06
DE2262505C2 (de) 1982-12-09
DE2262505A1 (de) 1973-06-28
ZA728043B (en) 1973-07-25
GB1369829A (en) 1974-10-09
ES409985A1 (es) 1976-04-01
IE37079B1 (en) 1977-04-27

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse