JPS5341109A - Signal arrival detecting device for accessory unit with telephone set - Google Patents

Signal arrival detecting device for accessory unit with telephone set

Info

Publication number
JPS5341109A
JPS5341109A JP11635976A JP11635976A JPS5341109A JP S5341109 A JPS5341109 A JP S5341109A JP 11635976 A JP11635976 A JP 11635976A JP 11635976 A JP11635976 A JP 11635976A JP S5341109 A JPS5341109 A JP S5341109A
Authority
JP
Japan
Prior art keywords
detecting device
telephone set
accessory unit
signal arrival
arrival detecting
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
JP11635976A
Other languages
Japanese (ja)
Inventor
Hideji Nemoto
Yuji Nozawa
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP11635976A priority Critical patent/JPS5341109A/en
Publication of JPS5341109A publication Critical patent/JPS5341109A/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 prevent the mis-terminating action at self-dialing time closing the DC circuit of a telephone circuit only when a call signal arrives from the telephone circuit.
JP11635976A 1976-09-28 1976-09-28 Signal arrival detecting device for accessory unit with telephone set Pending JPS5341109A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11635976A JPS5341109A (en) 1976-09-28 1976-09-28 Signal arrival detecting device for accessory unit with telephone set

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11635976A JPS5341109A (en) 1976-09-28 1976-09-28 Signal arrival detecting device for accessory unit with telephone set

Publications (1)

Publication Number Publication Date
JPS5341109A true JPS5341109A (en) 1978-04-14

Family

ID=14684998

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11635976A Pending JPS5341109A (en) 1976-09-28 1976-09-28 Signal arrival detecting device for accessory unit with telephone set

Country Status (1)

Country Link
JP (1) JPS5341109A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59212142A (en) * 1983-05-17 1984-12-01 Kyoei Seikou Kk Forming method of ring body for bearing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59212142A (en) * 1983-05-17 1984-12-01 Kyoei Seikou Kk Forming method of ring body for bearing

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