JPS5444405A - Simultaneous loudspeaker telephone system - Google Patents

Simultaneous loudspeaker telephone system

Info

Publication number
JPS5444405A
JPS5444405A JP11112877A JP11112877A JPS5444405A JP S5444405 A JPS5444405 A JP S5444405A JP 11112877 A JP11112877 A JP 11112877A JP 11112877 A JP11112877 A JP 11112877A JP S5444405 A JPS5444405 A JP S5444405A
Authority
JP
Japan
Prior art keywords
simultaneous
telephone system
loudspeaker telephone
loudspeaker
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.)
Pending
Application number
JP11112877A
Other languages
Japanese (ja)
Inventor
Setsuo Baba
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP11112877A priority Critical patent/JPS5444405A/en
Publication of JPS5444405A publication Critical patent/JPS5444405A/en
Pending legal-status Critical Current

Links

Landscapes

  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
JP11112877A 1977-09-14 1977-09-14 Simultaneous loudspeaker telephone system Pending JPS5444405A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11112877A JPS5444405A (en) 1977-09-14 1977-09-14 Simultaneous loudspeaker telephone system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11112877A JPS5444405A (en) 1977-09-14 1977-09-14 Simultaneous loudspeaker telephone system

Publications (1)

Publication Number Publication Date
JPS5444405A true JPS5444405A (en) 1979-04-07

Family

ID=14553144

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11112877A Pending JPS5444405A (en) 1977-09-14 1977-09-14 Simultaneous loudspeaker telephone system

Country Status (1)

Country Link
JP (1) JPS5444405A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5890895A (en) * 1981-11-24 1983-05-30 Nec Corp Monitor system for outgoing and incoming trunk polarity for automatic exchange

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5890895A (en) * 1981-11-24 1983-05-30 Nec Corp Monitor system for outgoing and incoming trunk polarity for automatic exchange

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