JPS57207469A - Incoming circuit for public telephone set - Google Patents

Incoming circuit for public telephone set

Info

Publication number
JPS57207469A
JPS57207469A JP9219481A JP9219481A JPS57207469A JP S57207469 A JPS57207469 A JP S57207469A JP 9219481 A JP9219481 A JP 9219481A JP 9219481 A JP9219481 A JP 9219481A JP S57207469 A JPS57207469 A JP S57207469A
Authority
JP
Japan
Prior art keywords
signal
channel
circuit
polarity inversion
channel loop
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
JP9219481A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0115185B2 (enrdf_load_stackoverflow
Inventor
Akio Hikone
Akira Suzuki
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 JP9219481A priority Critical patent/JPS57207469A/ja
Publication of JPS57207469A publication Critical patent/JPS57207469A/ja
Publication of JPH0115185B2 publication Critical patent/JPH0115185B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M17/00—Prepayment of wireline communication systems, wireless communication systems or telephone systems
    • H04M17/02—Coin-freed or check-freed systems, e.g. mobile- or card-operated phones, public telephones or booths
    • H04M17/023—Circuit arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Prepayment Telephone Systems (AREA)
JP9219481A 1981-06-17 1981-06-17 Incoming circuit for public telephone set Granted JPS57207469A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9219481A JPS57207469A (en) 1981-06-17 1981-06-17 Incoming circuit for public telephone set

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9219481A JPS57207469A (en) 1981-06-17 1981-06-17 Incoming circuit for public telephone set

Publications (2)

Publication Number Publication Date
JPS57207469A true JPS57207469A (en) 1982-12-20
JPH0115185B2 JPH0115185B2 (enrdf_load_stackoverflow) 1989-03-16

Family

ID=14047631

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9219481A Granted JPS57207469A (en) 1981-06-17 1981-06-17 Incoming circuit for public telephone set

Country Status (1)

Country Link
JP (1) JPS57207469A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
JPH0115185B2 (enrdf_load_stackoverflow) 1989-03-16

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