JPS5844851A - 回線切換装置 - Google Patents

回線切換装置

Info

Publication number
JPS5844851A
JPS5844851A JP57135538A JP13553882A JPS5844851A JP S5844851 A JPS5844851 A JP S5844851A JP 57135538 A JP57135538 A JP 57135538A JP 13553882 A JP13553882 A JP 13553882A JP S5844851 A JPS5844851 A JP S5844851A
Authority
JP
Japan
Prior art keywords
line
subscriber telephone
switching
subscriber
leased
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
JP57135538A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6317388B2 (enrdf_load_stackoverflow
Inventor
Chuzo Nashimoto
梨本 忠三
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.)
Ricoh Co Ltd
Original Assignee
Ricoh Co 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP57135538A priority Critical patent/JPS5844851A/ja
Publication of JPS5844851A publication Critical patent/JPS5844851A/ja
Publication of JPS6317388B2 publication Critical patent/JPS6317388B2/ja
Granted legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M11/00Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/06Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Communication Control (AREA)
JP57135538A 1982-08-02 1982-08-02 回線切換装置 Granted JPS5844851A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57135538A JPS5844851A (ja) 1982-08-02 1982-08-02 回線切換装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57135538A JPS5844851A (ja) 1982-08-02 1982-08-02 回線切換装置

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP54114585A Division JPS5925417B2 (ja) 1979-09-06 1979-09-06 回線切換装置

Publications (2)

Publication Number Publication Date
JPS5844851A true JPS5844851A (ja) 1983-03-15
JPS6317388B2 JPS6317388B2 (enrdf_load_stackoverflow) 1988-04-13

Family

ID=15154117

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57135538A Granted JPS5844851A (ja) 1982-08-02 1982-08-02 回線切換装置

Country Status (1)

Country Link
JP (1) JPS5844851A (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6030250A (ja) * 1983-07-28 1985-02-15 Fujitsu Ltd 自動着信制御装置
JPS6249745A (ja) * 1985-08-29 1987-03-04 Nec Corp 回線切換装置
US5153912A (en) * 1987-03-11 1992-10-06 Canon Kabushiki Kaisha Data communication apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6030250A (ja) * 1983-07-28 1985-02-15 Fujitsu Ltd 自動着信制御装置
JPS6249745A (ja) * 1985-08-29 1987-03-04 Nec Corp 回線切換装置
US5153912A (en) * 1987-03-11 1992-10-06 Canon Kabushiki Kaisha Data communication apparatus

Also Published As

Publication number Publication date
JPS6317388B2 (enrdf_load_stackoverflow) 1988-04-13

Similar Documents

Publication Publication Date Title
US4139739A (en) Telecommunications call back system
EP0967827B1 (en) Method for performing call forwarding service with an ISDN network terminator
JPS5925417B2 (ja) 回線切換装置
EP0956657B1 (en) Dynamic echo canceller and parameter selection in telephony systems
JP2904637B2 (ja) 通信網の信号方法
US4130736A (en) Telecommunication system with keyboard selection
JPS5844851A (ja) 回線切換装置
JPH01235447A (ja) 有線端末装置
JPS6258581B2 (enrdf_load_stackoverflow)
JP2748466B2 (ja) オーダーワイヤ装置を備えた通信方式
JPS61203762A (ja) 切替通信方法
JP2543060B2 (ja) 電話交換機
JPH09181652A (ja) 反響除去システム
JP3418838B2 (ja) 秘話方法及び装置
CA2412729C (en) Methods for performing intelligent network services with an isdn network terminator located at a subscriber's premise
JPS62234454A (ja) 複数端末収容型回線インタフェイス装置
JP2580954B2 (ja) ファクシミリ装置の音声通報方法
JPS6156565A (ja) 局間コ−ルバツク方式
JPH05316552A (ja) 公専接続における構内交換機の音声品質保証方式
JPS598462A (ja) 共同電話機の相互通話方式
JPS5846915B2 (ja) 選択信号中継方式
JPH0583371A (ja) 交換システム
JPH06177986A (ja) 自動交換機の会議トランクの外線着信呼切断方法及びその切断装置
JPS63185258A (ja) 無線電話装置
JPH0611142B2 (ja) 4線式電子メ−ル装置の接続方式