JPS58105660A - 呼出信号送出回路 - Google Patents

呼出信号送出回路

Info

Publication number
JPS58105660A
JPS58105660A JP20491781A JP20491781A JPS58105660A JP S58105660 A JPS58105660 A JP S58105660A JP 20491781 A JP20491781 A JP 20491781A JP 20491781 A JP20491781 A JP 20491781A JP S58105660 A JPS58105660 A JP S58105660A
Authority
JP
Japan
Prior art keywords
transformer
subscriber
capacitor
primary winding
calling signal
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.)
Granted
Application number
JP20491781A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0234502B2 (US06268120-20010731-C00013.png
Inventor
Masato Fujisawa
藤沢　真人
Shoji Nojiri
野尻　昭二
Yoshikazu Tanaka
良和 田中
Yoshiharu Kamio
神尾　由治
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP20491781A priority Critical patent/JPS58105660A/ja
Publication of JPS58105660A publication Critical patent/JPS58105660A/ja
Publication of JPH0234502B2 publication Critical patent/JPH0234502B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/02—Calling substations, e.g. by ringing
    • H04M3/06—Calling substations, e.g. by ringing the calling signal being supplied from the subscriber's line circuit

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
JP20491781A 1981-12-18 1981-12-18 呼出信号送出回路 Granted JPS58105660A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20491781A JPS58105660A (ja) 1981-12-18 1981-12-18 呼出信号送出回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20491781A JPS58105660A (ja) 1981-12-18 1981-12-18 呼出信号送出回路

Publications (2)

Publication Number Publication Date
JPS58105660A true JPS58105660A (ja) 1983-06-23
JPH0234502B2 JPH0234502B2 (US06268120-20010731-C00013.png) 1990-08-03

Family

ID=16498510

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20491781A Granted JPS58105660A (ja) 1981-12-18 1981-12-18 呼出信号送出回路

Country Status (1)

Country Link
JP (1) JPS58105660A (US06268120-20010731-C00013.png)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55117393A (en) * 1979-03-02 1980-09-09 Hitachi Ltd Signal processor for subscriber circuit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55117393A (en) * 1979-03-02 1980-09-09 Hitachi Ltd Signal processor for subscriber circuit

Also Published As

Publication number Publication date
JPH0234502B2 (US06268120-20010731-C00013.png) 1990-08-03

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