JPH0526381B2 - - Google Patents

Info

Publication number
JPH0526381B2
JPH0526381B2 JP57023515A JP2351582A JPH0526381B2 JP H0526381 B2 JPH0526381 B2 JP H0526381B2 JP 57023515 A JP57023515 A JP 57023515A JP 2351582 A JP2351582 A JP 2351582A JP H0526381 B2 JPH0526381 B2 JP H0526381B2
Authority
JP
Japan
Prior art keywords
signal
circuit
dial
line
transistor
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
JP57023515A
Other languages
English (en)
Japanese (ja)
Other versions
JPS58142659A (ja
Inventor
Yutaka Nishino
Shinichi Shibata
Taiji Sato
Yoshiichi Sano
Yasunobu Nakayama
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.)
Toshiba Corp
Nippon Telegraph and Telephone Corp
Original Assignee
Toshiba Corp
Nippon Telegraph and Telephone 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 Toshiba Corp, Nippon Telegraph and Telephone Corp filed Critical Toshiba Corp
Priority to JP2351582A priority Critical patent/JPS58142659A/ja
Publication of JPS58142659A publication Critical patent/JPS58142659A/ja
Publication of JPH0526381B2 publication Critical patent/JPH0526381B2/ja
Granted legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M1/00Substation equipment, e.g. for use by subscribers
    • H04M1/26Devices for calling a subscriber
    • H04M1/30Devices which can set up and transmit only one digit at a time

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
JP2351582A 1982-02-18 1982-02-18 ダイヤル信号発信回路 Granted JPS58142659A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2351582A JPS58142659A (ja) 1982-02-18 1982-02-18 ダイヤル信号発信回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2351582A JPS58142659A (ja) 1982-02-18 1982-02-18 ダイヤル信号発信回路

Publications (2)

Publication Number Publication Date
JPS58142659A JPS58142659A (ja) 1983-08-24
JPH0526381B2 true JPH0526381B2 (en]) 1993-04-15

Family

ID=12112579

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2351582A Granted JPS58142659A (ja) 1982-02-18 1982-02-18 ダイヤル信号発信回路

Country Status (1)

Country Link
JP (1) JPS58142659A (en])

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61214846A (ja) * 1985-03-20 1986-09-24 Tokyo Electric Co Ltd 高機能電話機
JPH0618396B2 (ja) * 1989-07-03 1994-03-09 ローム株式会社 電話機用電源回路
JP2626557B2 (ja) * 1994-06-10 1997-07-02 日本電気株式会社 ダイヤル種別設定方式

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5644257A (en) * 1979-09-20 1981-04-23 Nippon Telegr & Teleph Corp <Ntt> Telephone set

Also Published As

Publication number Publication date
JPS58142659A (ja) 1983-08-24

Similar Documents

Publication Publication Date Title
US3510584A (en) Telephone system with added main line subscriber facilities
JPH0526381B2 (en])
US3979563A (en) Communication systems of key telephone systems
JPH0728436B2 (ja) 構内電話交換機
US4254306A (en) Key telephone system
US4185173A (en) Key telephone call signalling circuit
JPS5951648A (ja) ボタン電話装置
US4410767A (en) Key telephone system
JPH0326712Y2 (en])
JPS62200852A (ja) ボタン電話装置の停電電話機
JPH0137893B2 (en])
EP0396886A2 (en) Current switch for use in telephony systems or the like
JPS5952862B2 (ja) インタ−ホン装置
JPH0238529Y2 (en])
JP2506658B2 (ja) ボタン電話装置
KR0145481B1 (ko) 전원잡음 제거기능을 갖는 전자식 교환시스템
JPS6312603Y2 (en])
JPS5937758A (ja) 増幅回路
JPH083079Y2 (ja) 電話端末直流回路
JPH09200374A (ja) 端末網制御装置
JPH0250670B2 (en])
JPH0254708B2 (en])
JPH0153951B2 (en])
JPH04192848A (ja) 電話装置の着信回路
JPS60204193A (ja) 加入者回路