JPS55112065A - Extension recalling system - Google Patents

Extension recalling system

Info

Publication number
JPS55112065A
JPS55112065A JP2044679A JP2044679A JPS55112065A JP S55112065 A JPS55112065 A JP S55112065A JP 2044679 A JP2044679 A JP 2044679A JP 2044679 A JP2044679 A JP 2044679A JP S55112065 A JPS55112065 A JP S55112065A
Authority
JP
Japan
Prior art keywords
extension
hooking
trunk
release
control unit
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
JP2044679A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6139782B2 (enExample
Inventor
Shuichi Hashimoto
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.)
NEC Corp
Original Assignee
NEC Corp
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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP2044679A priority Critical patent/JPS55112065A/ja
Publication of JPS55112065A publication Critical patent/JPS55112065A/ja
Publication of JPS6139782B2 publication Critical patent/JPS6139782B2/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
JP2044679A 1979-02-22 1979-02-22 Extension recalling system Granted JPS55112065A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2044679A JPS55112065A (en) 1979-02-22 1979-02-22 Extension recalling system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2044679A JPS55112065A (en) 1979-02-22 1979-02-22 Extension recalling system

Publications (2)

Publication Number Publication Date
JPS55112065A true JPS55112065A (en) 1980-08-29
JPS6139782B2 JPS6139782B2 (enExample) 1986-09-05

Family

ID=12027273

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2044679A Granted JPS55112065A (en) 1979-02-22 1979-02-22 Extension recalling system

Country Status (1)

Country Link
JP (1) JPS55112065A (enExample)

Also Published As

Publication number Publication date
JPS6139782B2 (enExample) 1986-09-05

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