JPS5577262A - Detection circuit for improper dialing - Google Patents

Detection circuit for improper dialing

Info

Publication number
JPS5577262A
JPS5577262A JP14967478A JP14967478A JPS5577262A JP S5577262 A JPS5577262 A JP S5577262A JP 14967478 A JP14967478 A JP 14967478A JP 14967478 A JP14967478 A JP 14967478A JP S5577262 A JPS5577262 A JP S5577262A
Authority
JP
Japan
Prior art keywords
pulse
dial
signal
output
counter
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
JP14967478A
Other languages
English (en)
Japanese (ja)
Other versions
JPS57695B2 (enrdf_load_stackoverflow
Inventor
Yoshiaki Takeda
Akio Hikone
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.)
Tamura Electric Works Ltd
Original Assignee
Tamura Electric Works 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 Tamura Electric Works Ltd filed Critical Tamura Electric Works Ltd
Priority to JP14967478A priority Critical patent/JPS5577262A/ja
Publication of JPS5577262A publication Critical patent/JPS5577262A/ja
Publication of JPS57695B2 publication Critical patent/JPS57695B2/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
    • H04M1/26—Devices for calling a subscriber
    • H04M1/30—Devices which can set up and transmit only one digit at a time
    • H04M1/31—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses
    • H04M1/40—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses wherein the setting-operation short-circuits or open-circuits the transmitting mechanism during a variable part of a cycle

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
JP14967478A 1978-12-05 1978-12-05 Detection circuit for improper dialing Granted JPS5577262A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14967478A JPS5577262A (en) 1978-12-05 1978-12-05 Detection circuit for improper dialing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14967478A JPS5577262A (en) 1978-12-05 1978-12-05 Detection circuit for improper dialing

Publications (2)

Publication Number Publication Date
JPS5577262A true JPS5577262A (en) 1980-06-10
JPS57695B2 JPS57695B2 (enrdf_load_stackoverflow) 1982-01-07

Family

ID=15480343

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14967478A Granted JPS5577262A (en) 1978-12-05 1978-12-05 Detection circuit for improper dialing

Country Status (1)

Country Link
JP (1) JPS5577262A (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6283991U (enrdf_load_stackoverflow) * 1985-11-13 1987-05-28

Also Published As

Publication number Publication date
JPS57695B2 (enrdf_load_stackoverflow) 1982-01-07

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