JPH047623B2 - - Google Patents

Info

Publication number
JPH047623B2
JPH047623B2 JP59129021A JP12902184A JPH047623B2 JP H047623 B2 JPH047623 B2 JP H047623B2 JP 59129021 A JP59129021 A JP 59129021A JP 12902184 A JP12902184 A JP 12902184A JP H047623 B2 JPH047623 B2 JP H047623B2
Authority
JP
Japan
Prior art keywords
subscriber
monitoring
sending
digit
subscriber 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 - Lifetime
Application number
JP59129021A
Other languages
English (en)
Japanese (ja)
Other versions
JPS617762A (ja
Inventor
Masahiro Ito
Tsuneo Tanaka
Junji Nakamura
Akihiko Sato
Shizuo Murakoshi
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
Hitachi Ltd
NEC Corp
Oki Electric Industry Co Ltd
NTT Inc
Original Assignee
Fujitsu Ltd
Hitachi Ltd
Nippon Telegraph and Telephone Corp
Oki Electric Industry Co Ltd
Nippon Electric 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 Fujitsu Ltd, Hitachi Ltd, Nippon Telegraph and Telephone Corp, Oki Electric Industry Co Ltd, Nippon Electric Co Ltd filed Critical Fujitsu Ltd
Priority to JP12902184A priority Critical patent/JPS617762A/ja
Publication of JPS617762A publication Critical patent/JPS617762A/ja
Publication of JPH047623B2 publication Critical patent/JPH047623B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • H04M3/2272—Subscriber line supervision circuits, e.g. call detection circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Interface Circuits In Exchanges (AREA)
JP12902184A 1984-06-22 1984-06-22 加入者線監視方式 Granted JPS617762A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12902184A JPS617762A (ja) 1984-06-22 1984-06-22 加入者線監視方式

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12902184A JPS617762A (ja) 1984-06-22 1984-06-22 加入者線監視方式

Publications (2)

Publication Number Publication Date
JPS617762A JPS617762A (ja) 1986-01-14
JPH047623B2 true JPH047623B2 (enExample) 1992-02-12

Family

ID=14999192

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12902184A Granted JPS617762A (ja) 1984-06-22 1984-06-22 加入者線監視方式

Country Status (1)

Country Link
JP (1) JPS617762A (enExample)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5927658A (ja) * 1982-08-04 1984-02-14 Nippon Denki Tsushin Syst Kk 発呼者番号転送方式

Also Published As

Publication number Publication date
JPS617762A (ja) 1986-01-14

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