AU4959672A - Improvements in or relating to electric impulse transmitters - Google Patents

Improvements in or relating to electric impulse transmitters

Info

Publication number
AU4959672A
AU4959672A AU49596/72A AU4959672A AU4959672A AU 4959672 A AU4959672 A AU 4959672A AU 49596/72 A AU49596/72 A AU 49596/72A AU 4959672 A AU4959672 A AU 4959672A AU 4959672 A AU4959672 A AU 4959672A
Authority
AU
Australia
Prior art keywords
relating
electric impulse
impulse transmitters
transmitters
electric
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
Application number
AU49596/72A
Other versions
AU470553B2 (en
Inventor
John Debenham Micheal
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.)
Nokia Services Ltd
Original Assignee
Standard Telephone and Cables Pty Ltd
Standard Telephone and Cables PLC
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 Telephone and Cables Pty Ltd, Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables Pty Ltd
Publication of AU4959672A publication Critical patent/AU4959672A/en
Application granted granted Critical
Publication of AU470553B2 publication Critical patent/AU470553B2/en
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)
AU49596/72A 1971-12-23 1972-12-04 Improvements in or relating to electric impulse transmitters Expired AU470553B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB59927/71 1971-12-23
GB5992771A GB1369829A (en) 1971-12-23 1971-12-23 Electric impulse transmitters

Publications (2)

Publication Number Publication Date
AU4959672A true AU4959672A (en) 1974-06-06
AU470553B2 AU470553B2 (en) 1976-03-18

Family

ID=10484670

Family Applications (1)

Application Number Title Priority Date Filing Date
AU49596/72A Expired AU470553B2 (en) 1971-12-23 1972-12-04 Improvements in or relating to electric impulse transmitters

Country Status (8)

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

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7907134A (en) * 1979-09-25 1981-03-27 Ericsson Telefon Mij TELEPHONE INSTALLATION OF THE TYPE INDICATED AS A STAR POINT INSTALLATION.
FR2501938B1 (en) * 1981-03-13 1985-06-21 Constr Telephoniques SIGNAL CONFORMER CIRCUIT

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

Also Published As

Publication number Publication date
IE37079L (en) 1973-06-23
IT972579B (en) 1974-05-31
FR2165649A5 (en) 1973-08-03
AU470553B2 (en) 1976-03-18
DE2262505C2 (en) 1982-12-09
DE2262505A1 (en) 1973-06-28
ZA728043B (en) 1973-07-25
GB1369829A (en) 1974-10-09
ES409985A1 (en) 1976-04-01
IE37079B1 (en) 1977-04-27

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