JPS51151004A - Signal judger for telephone automatic response unit - Google Patents

Signal judger for telephone automatic response unit

Info

Publication number
JPS51151004A
JPS51151004A JP7536175A JP7536175A JPS51151004A JP S51151004 A JPS51151004 A JP S51151004A JP 7536175 A JP7536175 A JP 7536175A JP 7536175 A JP7536175 A JP 7536175A JP S51151004 A JPS51151004 A JP S51151004A
Authority
JP
Japan
Prior art keywords
response unit
automatic response
telephone automatic
signal
judger
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
JP7536175A
Other languages
Japanese (ja)
Inventor
Matsuhisa Fujita
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.)
KURAUN KK
Crown KK
Original Assignee
KURAUN KK
Crown 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 KURAUN KK, Crown KK filed Critical KURAUN KK
Priority to JP7536175A priority Critical patent/JPS51151004A/en
Publication of JPS51151004A publication Critical patent/JPS51151004A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/64—Automatic arrangements for answering calls; Automatic arrangements for recording messages for absent subscribers; Arrangements for recording conversations
    • H04M1/65—Recording arrangements for recording a message from the calling party
    • H04M1/654—Telephone line monitoring circuits therefor, e.g. ring detectors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/82—Line monitoring circuits for call progress or status discrimination

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)

Abstract

PURPOSE:To exactly judge the listenable signal sound and voice signal by regulating on off of oscillating circuit with wave type difference in input signals.
JP7536175A 1975-06-20 1975-06-20 Signal judger for telephone automatic response unit Pending JPS51151004A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7536175A JPS51151004A (en) 1975-06-20 1975-06-20 Signal judger for telephone automatic response unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7536175A JPS51151004A (en) 1975-06-20 1975-06-20 Signal judger for telephone automatic response unit

Publications (1)

Publication Number Publication Date
JPS51151004A true JPS51151004A (en) 1976-12-25

Family

ID=13573997

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7536175A Pending JPS51151004A (en) 1975-06-20 1975-06-20 Signal judger for telephone automatic response unit

Country Status (1)

Country Link
JP (1) JPS51151004A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0481155A (en) * 1990-07-24 1992-03-13 Apuchi Kk Detector for state of telephone line

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0481155A (en) * 1990-07-24 1992-03-13 Apuchi Kk Detector for state of telephone line

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