JPS5698067A - Interphone device - Google Patents

Interphone device

Info

Publication number
JPS5698067A
JPS5698067A JP17350179A JP17350179A JPS5698067A JP S5698067 A JPS5698067 A JP S5698067A JP 17350179 A JP17350179 A JP 17350179A JP 17350179 A JP17350179 A JP 17350179A JP S5698067 A JPS5698067 A JP S5698067A
Authority
JP
Japan
Prior art keywords
switch
calling
timer
produces
moment
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
JP17350179A
Other languages
Japanese (ja)
Inventor
Tetsushi Yamashita
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.)
Toshiba Electric Equipment Corp
Original Assignee
Toshiba Electric Equipment 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 Toshiba Electric Equipment Corp filed Critical Toshiba Electric Equipment Corp
Priority to JP17350179A priority Critical patent/JPS5698067A/en
Publication of JPS5698067A publication Critical patent/JPS5698067A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/04—Arrangements for interconnection not involving centralised switching involving a separate line for each pair of parties

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)

Abstract

PURPOSE:To require no special manual switching action, by setting the switching means in the front stage of an amplifying device under the OFF state for a certain calling time. CONSTITUTION:With operation of the calling switch 101, the timer 104 and the calling device 102 start their operations at the operation moment of the switch. The timer 104 produces an output for a certain time from the moment of its operation to turn off the switch means 105. Accordingly, no voice signal is supplied to the amplifying device 103. On the other hand, the calling device 102 produces the call signal for the OFF period of the means 105. As a result, both the timer 104 and the means 105 block automatically the mixture of the voice signal or the like for a certain time when the switch 101 is operated.
JP17350179A 1979-12-29 1979-12-29 Interphone device Pending JPS5698067A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17350179A JPS5698067A (en) 1979-12-29 1979-12-29 Interphone device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17350179A JPS5698067A (en) 1979-12-29 1979-12-29 Interphone device

Publications (1)

Publication Number Publication Date
JPS5698067A true JPS5698067A (en) 1981-08-07

Family

ID=15961679

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17350179A Pending JPS5698067A (en) 1979-12-29 1979-12-29 Interphone device

Country Status (1)

Country Link
JP (1) JPS5698067A (en)

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