JPS52136512A - Subscriber loop monitor system - Google Patents

Subscriber loop monitor system

Info

Publication number
JPS52136512A
JPS52136512A JP5286876A JP5286876A JPS52136512A JP S52136512 A JPS52136512 A JP S52136512A JP 5286876 A JP5286876 A JP 5286876A JP 5286876 A JP5286876 A JP 5286876A JP S52136512 A JPS52136512 A JP S52136512A
Authority
JP
Japan
Prior art keywords
monitor system
subscriber loop
loop monitor
subscriber
subscribers
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.)
Pending
Application number
JP5286876A
Other languages
Japanese (ja)
Inventor
Shoji Ito
Takeshi Sakai
Tadashi Matsumoto
Toshiyuki Ishikawa
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
NTT Inc
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 JP5286876A priority Critical patent/JPS52136512A/en
Publication of JPS52136512A publication Critical patent/JPS52136512A/en
Pending legal-status Critical Current

Links

Landscapes

  • Devices For Supply Of Signal Current (AREA)
  • Interface Circuits In Exchanges (AREA)

Abstract

PURPOSE: To realize economization of the system by installing the ring trip detection circuit to the subscriber unit in common to the subscribers.
COPYRIGHT: (C)1977,JPO&Japio
JP5286876A 1976-05-11 1976-05-11 Subscriber loop monitor system Pending JPS52136512A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5286876A JPS52136512A (en) 1976-05-11 1976-05-11 Subscriber loop monitor system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5286876A JPS52136512A (en) 1976-05-11 1976-05-11 Subscriber loop monitor system

Publications (1)

Publication Number Publication Date
JPS52136512A true JPS52136512A (en) 1977-11-15

Family

ID=12926843

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5286876A Pending JPS52136512A (en) 1976-05-11 1976-05-11 Subscriber loop monitor system

Country Status (1)

Country Link
JP (1) JPS52136512A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55158797A (en) * 1979-05-28 1980-12-10 Iwatsu Electric Co Ltd Line circuit

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE835229A (en) * 1974-11-07 1976-03-01 BELL CONTROL CIRCUITS KIT

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE835229A (en) * 1974-11-07 1976-03-01 BELL CONTROL CIRCUITS KIT

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55158797A (en) * 1979-05-28 1980-12-10 Iwatsu Electric Co Ltd Line circuit

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