JPH0234502B2 - - Google Patents

Info

Publication number
JPH0234502B2
JPH0234502B2 JP56204917A JP20491781A JPH0234502B2 JP H0234502 B2 JPH0234502 B2 JP H0234502B2 JP 56204917 A JP56204917 A JP 56204917A JP 20491781 A JP20491781 A JP 20491781A JP H0234502 B2 JPH0234502 B2 JP H0234502B2
Authority
JP
Japan
Prior art keywords
subscriber
transformer
midpoint
relay
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.)
Expired - Lifetime
Application number
JP56204917A
Other languages
English (en)
Japanese (ja)
Other versions
JPS58105660A (ja
Inventor
Masato Fujisawa
Shoji Nojiri
Yoshikazu Tanaka
Yoshiharu Kamio
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 JPS58105660A (ja) 1983-06-23
JPH0234502B2 true JPH0234502B2 (en, 2012) 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 (en, 2012)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5919675B2 (ja) * 1979-03-02 1984-05-08 株式会社日立製作所 加入者回路の信号処理装置

Also Published As

Publication number Publication date
JPS58105660A (ja) 1983-06-23

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