JPS6130787B2 - - Google Patents

Info

Publication number
JPS6130787B2
JPS6130787B2 JP13160378A JP13160378A JPS6130787B2 JP S6130787 B2 JPS6130787 B2 JP S6130787B2 JP 13160378 A JP13160378 A JP 13160378A JP 13160378 A JP13160378 A JP 13160378A JP S6130787 B2 JPS6130787 B2 JP S6130787B2
Authority
JP
Japan
Prior art keywords
trunk
relay
camp
trunk line
extension
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
JP13160378A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5558654A (en
Inventor
Yoshitaka Yamato
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP13160378A priority Critical patent/JPS5558654A/ja
Publication of JPS5558654A publication Critical patent/JPS5558654A/ja
Publication of JPS6130787B2 publication Critical patent/JPS6130787B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/48—Arrangements for recalling a calling subscriber when the wanted subscriber ceases to be busy

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
JP13160378A 1978-10-27 1978-10-27 Trunk line automatic camp-on system Granted JPS5558654A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13160378A JPS5558654A (en) 1978-10-27 1978-10-27 Trunk line automatic camp-on system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13160378A JPS5558654A (en) 1978-10-27 1978-10-27 Trunk line automatic camp-on system

Publications (2)

Publication Number Publication Date
JPS5558654A JPS5558654A (en) 1980-05-01
JPS6130787B2 true JPS6130787B2 (enrdf_load_stackoverflow) 1986-07-16

Family

ID=15061913

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13160378A Granted JPS5558654A (en) 1978-10-27 1978-10-27 Trunk line automatic camp-on system

Country Status (1)

Country Link
JP (1) JPS5558654A (enrdf_load_stackoverflow)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS583453A (ja) * 1981-06-30 1983-01-10 Toshiba Corp 局線コ−ルバック方式
JPH1065684A (ja) * 1996-08-20 1998-03-06 Fujitsu Ltd 付加サービスの課金方法及び付加サービス通信システム
JPH1093717A (ja) * 1996-09-11 1998-04-10 Fujitsu Ltd オペレータ接続制御方法

Also Published As

Publication number Publication date
JPS5558654A (en) 1980-05-01

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