JPS617762A - 加入者線監視方式 - Google Patents

加入者線監視方式

Info

Publication number
JPS617762A
JPS617762A JP12902184A JP12902184A JPS617762A JP S617762 A JPS617762 A JP S617762A JP 12902184 A JP12902184 A JP 12902184A JP 12902184 A JP12902184 A JP 12902184A JP S617762 A JPS617762 A JP S617762A
Authority
JP
Japan
Prior art keywords
subscriber
line
call
signal
interphone
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
JP12902184A
Other languages
English (en)
Japanese (ja)
Other versions
JPH047623B2 (enExample
Inventor
Masahiro Ito
正博 伊藤
Tsuneo Tanaka
恒夫 田中
Junji Nakamura
純治 中村
Akihiko Sato
昭彦 佐藤
Shizuo Murakoshi
村越　鎮雄
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
NEC Corp
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, NEC Corp, 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 true JPS617762A (ja) 1986-01-14
JPH047623B2 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)

Citations (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

Patent Citations (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
JPH047623B2 (enExample) 1992-02-12

Similar Documents

Publication Publication Date Title
JPS5917017B2 (ja) エレベ−タ非常通報装置
JPS617762A (ja) 加入者線監視方式
JP7275867B2 (ja) 緊急通報装置
JPS5834695A (ja) ル−プ信号式両方向トランク
JPS6080353A (ja) トールダイヤルの発信局より着信局への制御方法
JP3196164B2 (ja) Ｉｓｄｎを用いたｌａｎシステム及びリモートブリッジ
JP2636219B2 (ja) 構内自動交換機
JP3394618B2 (ja) 蓄積交換網における網内故障回復検出通知方法
JP4328449B2 (ja) 強制回線接続装置
JP2669297B2 (ja) 交換局間無効保留トランク解除方法と該方法による交換局
JP3107647B2 (ja) 異常通報装置
JPH0614536Y2 (ja) 救急指令装置
JPS5970348A (ja) 非常緊急通話代替方式
JPS6188693A (ja) 複合ボタン電話装置
JP2826778B2 (ja) １１９通報回線応答方式
JP3009313B2 (ja) 情報送信装置
JPH0638521Y2 (ja) 非常通報装置
JPH06261353A (ja) 標準電話機を収容するための構成を備えたｌａｎシステム
JPH09162977A (ja) 緊急通報回線の試験方式
JPH07264289A (ja) 回線閉塞装置
JPS5955668A (ja) 話中状態識別方式
JPH04150651A (ja) 無ダイヤル接続サービス／一般ダイヤル接続サービス併用方式および電話交換機
JPH0252471B2 (enExample)
JPH0226431B2 (enExample)
JPH044654A (ja) 公衆電話網によるセンタ装置と端末装置との通信方法