JPS5690662A - Extension calling system of key telephone set - Google Patents

Extension calling system of key telephone set

Info

Publication number
JPS5690662A
JPS5690662A JP16753179A JP16753179A JPS5690662A JP S5690662 A JPS5690662 A JP S5690662A JP 16753179 A JP16753179 A JP 16753179A JP 16753179 A JP16753179 A JP 16753179A JP S5690662 A JPS5690662 A JP S5690662A
Authority
JP
Japan
Prior art keywords
key
extension
dss
telephone set
extension key
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
JP16753179A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6314558B2 (enrdf_load_stackoverflow
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.)
Iwatsu Electric Co Ltd
Nippon Telegraph and Telephone Corp
Original Assignee
Iwatsu Electric Co Ltd
Nippon Telegraph and Telephone Corp
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 Iwatsu Electric Co Ltd, Nippon Telegraph and Telephone Corp filed Critical Iwatsu Electric Co Ltd
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 true JPS5690662A (en) 1981-07-22
JPS6314558B2 JPS6314558B2 (enrdf_load_stackoverflow) 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 (enrdf_load_stackoverflow)

Cited By (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 (enrdf_load_stackoverflow) * 1990-07-10 1992-03-16

Families Citing this family (1)

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

Cited By (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 (enrdf_load_stackoverflow) * 1990-07-10 1992-03-16

Also Published As

Publication number Publication date
JPS6314558B2 (enrdf_load_stackoverflow) 1988-03-31

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