JPS6257135B2 - - Google Patents

Info

Publication number
JPS6257135B2
JPS6257135B2 JP56012880A JP1288081A JPS6257135B2 JP S6257135 B2 JPS6257135 B2 JP S6257135B2 JP 56012880 A JP56012880 A JP 56012880A JP 1288081 A JP1288081 A JP 1288081A JP S6257135 B2 JPS6257135 B2 JP S6257135B2
Authority
JP
Japan
Prior art keywords
loop
polarity
loop forming
forming means
line
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
Application number
JP56012880A
Other languages
English (en)
Japanese (ja)
Other versions
JPS57129052A (en
Inventor
Tetsuo Nojima
Tsuneo Kinoshita
Masaharu Shimada
Yukio Ueda
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
Nippon Telegraph and Telephone Corp
Original Assignee
Fujitsu Ltd
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 Fujitsu Ltd, Nippon Telegraph and Telephone Corp filed Critical Fujitsu Ltd
Priority to JP56012880A priority Critical patent/JPS57129052A/ja
Publication of JPS57129052A publication Critical patent/JPS57129052A/ja
Publication of JPS6257135B2 publication Critical patent/JPS6257135B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/42—Loop networks

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Maintenance And Management Of Digital Transmission (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
JP56012880A 1981-02-02 1981-02-02 Remote formation system of loop Granted JPS57129052A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56012880A JPS57129052A (en) 1981-02-02 1981-02-02 Remote formation system of loop

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56012880A JPS57129052A (en) 1981-02-02 1981-02-02 Remote formation system of loop

Publications (2)

Publication Number Publication Date
JPS57129052A JPS57129052A (en) 1982-08-10
JPS6257135B2 true JPS6257135B2 (enExample) 1987-11-30

Family

ID=11817719

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56012880A Granted JPS57129052A (en) 1981-02-02 1981-02-02 Remote formation system of loop

Country Status (1)

Country Link
JP (1) JPS57129052A (enExample)

Also Published As

Publication number Publication date
JPS57129052A (en) 1982-08-10

Similar Documents

Publication Publication Date Title
KR0140878B1 (ko) 유도 결합된 메세지 조절장치
KR920013993A (ko) 국지 전화기의 이용을 가능케하는 국지 전원 회로를 갖는 공중전화 교환망으로의 연결을 위해 데이타 통신장치에 연결되는 커플링 장치와, 데이타 통신장치 및 데이타 통신장치를 포함하는 워크 스테이션
JPS6257135B2 (enExample)
JPS6251018B2 (enExample)
US4284853A (en) Telecommunication subscriber line access circuit with ground key indication and a device for call signal generation
US3914656A (en) Automatic grounding system
JP2943466B2 (ja) 端末網制御装置
JPH0342951A (ja) 加入者線中継装置保守方式
JPH0230949Y2 (enExample)
JPH0129110B2 (enExample)
JPH1084561A (ja) ２線式伝送装置
JP2910365B2 (ja) 端末網制御装置
JPS59172862A (ja) デ−タ通信システムの電源制御方式
JPS59105724A (ja) デ−タ回線バツクアツプ装置
JPH0313155A (ja) 加入者線中継装置保守方式
JPS61140248A (ja) 通信用切換装置
JPH01254057A (ja) 網制御装置
JP2917968B2 (ja) 送信レベル切替装置および送信レベル切替方式
JP2718535B2 (ja) 通信回線端末制御装置
JPH03272254A (ja) ディジタル加入者線試験方式
JPH079464Y2 (ja) 分岐装置
JPS5825792A (ja) タイプライタ制御方式
JPS5821471B2 (ja) 端末接続方式
JPS6237571B2 (enExample)
JPS6212296A (ja) 信号線切換装置