JPS6257160B2 - - Google Patents

Info

Publication number
JPS6257160B2
JPS6257160B2 JP16753079A JP16753079A JPS6257160B2 JP S6257160 B2 JPS6257160 B2 JP S6257160B2 JP 16753079 A JP16753079 A JP 16753079A JP 16753079 A JP16753079 A JP 16753079A JP S6257160 B2 JPS6257160 B2 JP S6257160B2
Authority
JP
Japan
Prior art keywords
line
circuit
lines
signal
telephone
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
JP16753079A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5690661A (en
Inventor
Koichi Sekiguchi
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 JP16753079A priority Critical patent/JPS5690661A/ja
Publication of JPS5690661A publication Critical patent/JPS5690661A/ja
Publication of JPS6257160B2 publication Critical patent/JPS6257160B2/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)
JP16753079A 1979-12-25 1979-12-25 Two-circuit simultaneous connection and exchange system of key telephone set Granted JPS5690661A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16753079A JPS5690661A (en) 1979-12-25 1979-12-25 Two-circuit simultaneous connection and exchange system of key telephone set

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16753079A JPS5690661A (en) 1979-12-25 1979-12-25 Two-circuit simultaneous connection and exchange system of key telephone set

Publications (2)

Publication Number Publication Date
JPS5690661A JPS5690661A (en) 1981-07-22
JPS6257160B2 true JPS6257160B2 (en, 2012) 1987-11-30

Family

ID=15851395

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16753079A Granted JPS5690661A (en) 1979-12-25 1979-12-25 Two-circuit simultaneous connection and exchange system of key telephone set

Country Status (1)

Country Link
JP (1) JPS5690661A (en, 2012)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4825461A (en) * 1985-01-31 1989-04-25 Canon Kabushiki Kaisha Data communication apparatus for data and/or speech communication on a plurality of communication lines
JPH0346887A (ja) * 1989-07-14 1991-02-28 Nitsuko Corp 釦電話装置のインタフェイス接続方式

Also Published As

Publication number Publication date
JPS5690661A (en) 1981-07-22

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