JPS6314558B2 - - Google Patents

Info

Publication number
JPS6314558B2
JPS6314558B2 JP16753179A JP16753179A JPS6314558B2 JP S6314558 B2 JPS6314558 B2 JP S6314558B2 JP 16753179 A JP16753179 A JP 16753179A JP 16753179 A JP16753179 A JP 16753179A JP S6314558 B2 JPS6314558 B2 JP S6314558B2
Authority
JP
Japan
Prior art keywords
extension
key
circuit
telephone
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
Application number
JP16753179A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5690662A (en
Inventor
Seiya Uchida
Kazuyuki Yamamoto
Teruyuki Kubo
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.)
Nippon Telegraph and Telephone Corp
Iwasaki Tsushinki KK
Original Assignee
Nippon Telegraph and Telephone Corp
Iwasaki Tsushinki KK
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 Nippon Telegraph and Telephone Corp, Iwasaki Tsushinki KK filed Critical Nippon Telegraph and Telephone Corp
Priority to JP16753179A priority Critical patent/JPS5690662A/ja
Publication of JPS5690662A publication Critical patent/JPS5690662A/ja
Publication of JPS6314558B2 publication Critical patent/JPS6314558B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/002—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
JP16753179A 1979-12-25 1979-12-25 Extension calling system of key telephone set Granted JPS5690662A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16753179A JPS5690662A (en) 1979-12-25 1979-12-25 Extension calling system of key telephone set

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16753179A JPS5690662A (en) 1979-12-25 1979-12-25 Extension calling system of key telephone set

Publications (2)

Publication Number Publication Date
JPS5690662A JPS5690662A (en) 1981-07-22
JPS6314558B2 true JPS6314558B2 (he) 1988-03-31

Family

ID=15851415

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16753179A Granted JPS5690662A (en) 1979-12-25 1979-12-25 Extension calling system of key telephone set

Country Status (1)

Country Link
JP (1) JPS5690662A (he)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0325559U (he) * 1989-07-19 1991-03-15

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6314559A (ja) * 1986-07-07 1988-01-21 Nec Corp 構内電話呼出方式
JPH0431860U (he) * 1990-07-10 1992-03-16

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0325559U (he) * 1989-07-19 1991-03-15

Also Published As

Publication number Publication date
JPS5690662A (en) 1981-07-22

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