JPS57197950A - Discriminating circuit for beep tone of automatic answering telephone set - Google Patents

Discriminating circuit for beep tone of automatic answering telephone set

Info

Publication number
JPS57197950A
JPS57197950A JP8362581A JP8362581A JPS57197950A JP S57197950 A JPS57197950 A JP S57197950A JP 8362581 A JP8362581 A JP 8362581A JP 8362581 A JP8362581 A JP 8362581A JP S57197950 A JPS57197950 A JP S57197950A
Authority
JP
Japan
Prior art keywords
circuit
signal
beep tone
switch
telephone set
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.)
Granted
Application number
JP8362581A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6313625B2 (cs
Inventor
Seiichi Omichi
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.)
Tokyo Sanyo Electric Co Ltd
Sanyo Electric Co Ltd
Sanyo Denki Co Ltd
Original Assignee
Tokyo Sanyo Electric Co Ltd
Sanyo Electric Co Ltd
Sanyo Denki Co Ltd
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 Tokyo Sanyo Electric Co Ltd, Sanyo Electric Co Ltd, Sanyo Denki Co Ltd filed Critical Tokyo Sanyo Electric Co Ltd
Priority to JP8362581A priority Critical patent/JPS57197950A/ja
Publication of JPS57197950A publication Critical patent/JPS57197950A/ja
Publication of JPS6313625B2 publication Critical patent/JPS6313625B2/ja
Granted 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)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
JP8362581A 1981-05-29 1981-05-29 Discriminating circuit for beep tone of automatic answering telephone set Granted JPS57197950A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8362581A JPS57197950A (en) 1981-05-29 1981-05-29 Discriminating circuit for beep tone of automatic answering telephone set

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8362581A JPS57197950A (en) 1981-05-29 1981-05-29 Discriminating circuit for beep tone of automatic answering telephone set

Publications (2)

Publication Number Publication Date
JPS57197950A true JPS57197950A (en) 1982-12-04
JPS6313625B2 JPS6313625B2 (cs) 1988-03-26

Family

ID=13807650

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8362581A Granted JPS57197950A (en) 1981-05-29 1981-05-29 Discriminating circuit for beep tone of automatic answering telephone set

Country Status (1)

Country Link
JP (1) JPS57197950A (cs)

Also Published As

Publication number Publication date
JPS6313625B2 (cs) 1988-03-26

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