JPS56132843A - Subscriber's line signal system - Google Patents

Subscriber's line signal system

Info

Publication number
JPS56132843A
JPS56132843A JP3709080A JP3709080A JPS56132843A JP S56132843 A JPS56132843 A JP S56132843A JP 3709080 A JP3709080 A JP 3709080A JP 3709080 A JP3709080 A JP 3709080A JP S56132843 A JPS56132843 A JP S56132843A
Authority
JP
Japan
Prior art keywords
terminal
pattern
terminals
communication
subscriber
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
JP3709080A
Other languages
English (en)
Other versions
JPS6248937B2 (ja
Inventor
Takashi Akao
Shuji Tomita
Yukio Hiramatsu
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 JP3709080A priority Critical patent/JPS56132843A/ja
Publication of JPS56132843A publication Critical patent/JPS56132843A/ja
Publication of JPS6248937B2 publication Critical patent/JPS6248937B2/ja
Granted legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching 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)
JP3709080A 1980-03-24 1980-03-24 Subscriber's line signal system Granted JPS56132843A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3709080A JPS56132843A (en) 1980-03-24 1980-03-24 Subscriber's line signal system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3709080A JPS56132843A (en) 1980-03-24 1980-03-24 Subscriber's line signal system

Publications (2)

Publication Number Publication Date
JPS56132843A true JPS56132843A (en) 1981-10-17
JPS6248937B2 JPS6248937B2 (ja) 1987-10-16

Family

ID=12487855

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3709080A Granted JPS56132843A (en) 1980-03-24 1980-03-24 Subscriber's line signal system

Country Status (1)

Country Link
JP (1) JPS56132843A (ja)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH021630U (ja) * 1988-06-15 1990-01-08

Also Published As

Publication number Publication date
JPS6248937B2 (ja) 1987-10-16

Similar Documents

Publication Publication Date Title
JPS56153859A (en) Pcm line switching device
JPS56132843A (en) Subscriber's line signal system
JPS5547768A (en) Facsimile callout system
JPS57160258A (en) Circuit switching device
JPS5795744A (en) Automatic line switching device for data communication device
JPS57145466A (en) Switchboard
JPS53117922A (en) Absence reception voice answer skip system
JPS5690655A (en) Wire transmission system
JPS5799858A (en) Public terminal communication system
JPS5451702A (en) Automatic power supply cut-off circuit
JPS5432938A (en) Test monitor system of on-line data communication system
JPS56160168A (en) Exchange system
JPS6473851A (en) Terminal connection identifying system
JPS5698054A (en) Backup system
JPS56165434A (en) Transmitting system for movement information of travelling object
JPS54105408A (en) Switchboard signal system
JPS56140745A (en) Forming method of circuit test system
JPS56149143A (en) Circuit quality monitor system
JPS554145A (en) Terminal test system
JPS56132036A (en) Confirmation system for operating equipment of terminal station
JPS5414112A (en) Repeating and delivery system for signal
JPS5315703A (en) Semi-double data communication system
JPS5723370A (en) Alarm system using community antenna televison circuit
JPS54120514A (en) Incoming test system of subscribersigma terminal control circuit
JPS57147361A (en) Return testing system for four-wire system trunk line