JPS6156910B2 - - Google Patents

Info

Publication number
JPS6156910B2
JPS6156910B2 JP7041379A JP7041379A JPS6156910B2 JP S6156910 B2 JPS6156910 B2 JP S6156910B2 JP 7041379 A JP7041379 A JP 7041379A JP 7041379 A JP7041379 A JP 7041379A JP S6156910 B2 JPS6156910 B2 JP S6156910B2
Authority
JP
Japan
Prior art keywords
signal
circuit
call
billing
output
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.)
Expired
Application number
JP7041379A
Other languages
English (en)
Japanese (ja)
Other versions
JPS55162660A (en
Inventor
Shigeyasu Tanaka
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.)
Anritsu Corp
Original Assignee
Anritsu Corp
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 Anritsu Corp filed Critical Anritsu Corp
Priority to JP7041379A priority Critical patent/JPS55162660A/ja
Publication of JPS55162660A publication Critical patent/JPS55162660A/ja
Publication of JPS6156910B2 publication Critical patent/JPS6156910B2/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)
JP7041379A 1979-06-05 1979-06-05 Charging signal monitor circuit for public telephone set Granted JPS55162660A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7041379A JPS55162660A (en) 1979-06-05 1979-06-05 Charging signal monitor circuit for public telephone set

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7041379A JPS55162660A (en) 1979-06-05 1979-06-05 Charging signal monitor circuit for public telephone set

Publications (2)

Publication Number Publication Date
JPS55162660A JPS55162660A (en) 1980-12-18
JPS6156910B2 true JPS6156910B2 (enrdf_load_stackoverflow) 1986-12-04

Family

ID=13430754

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7041379A Granted JPS55162660A (en) 1979-06-05 1979-06-05 Charging signal monitor circuit for public telephone set

Country Status (1)

Country Link
JP (1) JPS55162660A (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61194967A (ja) * 1985-02-23 1986-08-29 Tamura Electric Works Ltd 公衆電話機

Also Published As

Publication number Publication date
JPS55162660A (en) 1980-12-18

Similar Documents

Publication Publication Date Title
US4969178A (en) Multipurpose subscriber local line monitoring device
US4759054A (en) Toll telephone system and method for maintaining or initiating loop current after resuming on-hook condition
US4860346A (en) Telephone system and method operated from central office loop current
US4451707A (en) Ring detector and telephone line monitoring system for telephone answering instrument
US4528425A (en) Method of and circuitry for detecting, at a telephone exchange, the lifting of a subscriber's handset in response to ringing current emitted by the exchange
US3962546A (en) Malfunction detection and changeover apparatus for data communications system
US4860345A (en) Telephone system and method operated from central office loop current
JPS6156910B2 (enrdf_load_stackoverflow)
CA1053782A (en) Telephone line transfer circuit
US4689816A (en) Three relay C. O. trunk interface
US4759050A (en) Intelligent toll telephone system and method
US7162028B2 (en) Universal telephony interface polarity detector
JPH0137897B2 (enrdf_load_stackoverflow)
JPS5840679Y2 (ja) 公衆電話機
US6094480A (en) Ring trip detector
JP2599801Y2 (ja) 着信応答検知回路
JPS6342606Y2 (enrdf_load_stackoverflow)
JPH0230942Y2 (enrdf_load_stackoverflow)
JPS6345094Y2 (enrdf_load_stackoverflow)
JPS6328386B2 (enrdf_load_stackoverflow)
JPH0355955A (ja) 電話機の電源制御回路
JPH0577227B2 (enrdf_load_stackoverflow)
JPS6042542Y2 (ja) 押ボタンダイヤル電話機回路
JPS6318205Y2 (enrdf_load_stackoverflow)
JPH0314858Y2 (enrdf_load_stackoverflow)