AU648104B2 - Circuit for transmitting voice signals and dial pulses - Google Patents

Circuit for transmitting voice signals and dial pulses Download PDF

Info

Publication number
AU648104B2
AU648104B2 AU83827/91A AU8382791A AU648104B2 AU 648104 B2 AU648104 B2 AU 648104B2 AU 83827/91 A AU83827/91 A AU 83827/91A AU 8382791 A AU8382791 A AU 8382791A AU 648104 B2 AU648104 B2 AU 648104B2
Authority
AU
Australia
Prior art keywords
circuit
relay
telephone network
network lines
primary winding
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.)
Ceased
Application number
AU83827/91A
Other languages
English (en)
Other versions
AU8382791A (en
Inventor
Tooru Shimura
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.)
NEC Platforms Ltd
Original Assignee
Nitsuko 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 Nitsuko Corp filed Critical Nitsuko Corp
Publication of AU8382791A publication Critical patent/AU8382791A/en
Application granted granted Critical
Publication of AU648104B2 publication Critical patent/AU648104B2/en
Anticipated expiration legal-status Critical
Ceased 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephonic Communication Services (AREA)
AU83827/91A 1990-09-17 1991-09-12 Circuit for transmitting voice signals and dial pulses Ceased AU648104B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1990097478U JPH0455856U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1990-09-17 1990-09-17
JP2-97478U 1990-09-17

Publications (2)

Publication Number Publication Date
AU8382791A AU8382791A (en) 1992-03-19
AU648104B2 true AU648104B2 (en) 1994-04-14

Family

ID=14193401

Family Applications (1)

Application Number Title Priority Date Filing Date
AU83827/91A Ceased AU648104B2 (en) 1990-09-17 1991-09-12 Circuit for transmitting voice signals and dial pulses

Country Status (4)

Country Link
US (1) US5280522A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPH0455856U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AU (1) AU648104B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB2250661B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69329859T2 (de) * 1993-10-29 2001-06-07 Stmicroelectronics S.R.L., Agrate Brianza Fernsprech-Teilnehmerschaltung mit einem galvanischen Trennungselement zur Erzeugung der An/Aus Zustände einer Fernsprechleitung

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU556924B2 (en) * 1982-03-24 1986-11-27 Alcatel Australia Limited 2-line power supply
AU579749B2 (en) * 1982-03-24 1988-12-08 Alcatel Australia Limited A ring signal detector

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62116046A (ja) * 1985-11-15 1987-05-27 Nec Corp 電話機回路
JPH02294143A (ja) * 1989-05-09 1990-12-05 Toshiba Corp 回線インターフェース回路

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU556924B2 (en) * 1982-03-24 1986-11-27 Alcatel Australia Limited 2-line power supply
AU579749B2 (en) * 1982-03-24 1988-12-08 Alcatel Australia Limited A ring signal detector

Also Published As

Publication number Publication date
GB9119352D0 (en) 1991-10-23
GB2250661B (en) 1994-09-21
AU8382791A (en) 1992-03-19
JPH0455856U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1992-05-13
GB2250661A (en) 1992-06-10
US5280522A (en) 1994-01-18

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