JPS547208A - Two party line telephone mutual calling repeater and mutual calling system therefor - Google Patents

Two party line telephone mutual calling repeater and mutual calling system therefor

Info

Publication number
JPS547208A
JPS547208A JP7307577A JP7307577A JPS547208A JP S547208 A JPS547208 A JP S547208A JP 7307577 A JP7307577 A JP 7307577A JP 7307577 A JP7307577 A JP 7307577A JP S547208 A JPS547208 A JP S547208A
Authority
JP
Japan
Prior art keywords
mutual calling
repeater
system therefor
line telephone
party 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.)
Pending
Application number
JP7307577A
Other languages
Japanese (ja)
Inventor
Kouichi Konno
Kiyomi Muranaka
Kenji Suzuki
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.)
Hokkaido Electric Power Co Inc
Seikosha KK
Original Assignee
Hokkaido Electric Power Co Inc
Seikosha 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 Hokkaido Electric Power Co Inc, Seikosha KK filed Critical Hokkaido Electric Power Co Inc
Priority to JP7307577A priority Critical patent/JPS547208A/en
Publication of JPS547208A publication Critical patent/JPS547208A/en
Pending legal-status Critical Current

Links

Landscapes

  • Interface Circuits In Exchanges (AREA)
JP7307577A 1977-06-20 1977-06-20 Two party line telephone mutual calling repeater and mutual calling system therefor Pending JPS547208A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7307577A JPS547208A (en) 1977-06-20 1977-06-20 Two party line telephone mutual calling repeater and mutual calling system therefor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7307577A JPS547208A (en) 1977-06-20 1977-06-20 Two party line telephone mutual calling repeater and mutual calling system therefor

Publications (1)

Publication Number Publication Date
JPS547208A true JPS547208A (en) 1979-01-19

Family

ID=13507836

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7307577A Pending JPS547208A (en) 1977-06-20 1977-06-20 Two party line telephone mutual calling repeater and mutual calling system therefor

Country Status (1)

Country Link
JP (1) JPS547208A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5022367A (en) * 1973-06-21 1975-03-10

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5022367A (en) * 1973-06-21 1975-03-10

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