JPS60208155A - 公衆電話機 - Google Patents

公衆電話機

Info

Publication number
JPS60208155A
JPS60208155A JP6379684A JP6379684A JPS60208155A JP S60208155 A JPS60208155 A JP S60208155A JP 6379684 A JP6379684 A JP 6379684A JP 6379684 A JP6379684 A JP 6379684A JP S60208155 A JPS60208155 A JP S60208155A
Authority
JP
Japan
Prior art keywords
bell
signal
circuit
ringing
bell signal
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
JP6379684A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0256872B2 (enrdf_load_stackoverflow
Inventor
Shigeyasu Tanaka
田中　重保
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 JP6379684A priority Critical patent/JPS60208155A/ja
Publication of JPS60208155A publication Critical patent/JPS60208155A/ja
Publication of JPH0256872B2 publication Critical patent/JPH0256872B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
    • H04M19/04—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone the ringing-current being generated at the substations

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Prepayment Telephone Systems (AREA)
JP6379684A 1984-03-31 1984-03-31 公衆電話機 Granted JPS60208155A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6379684A JPS60208155A (ja) 1984-03-31 1984-03-31 公衆電話機

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6379684A JPS60208155A (ja) 1984-03-31 1984-03-31 公衆電話機

Publications (2)

Publication Number Publication Date
JPS60208155A true JPS60208155A (ja) 1985-10-19
JPH0256872B2 JPH0256872B2 (enrdf_load_stackoverflow) 1990-12-03

Family

ID=13239695

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6379684A Granted JPS60208155A (ja) 1984-03-31 1984-03-31 公衆電話機

Country Status (1)

Country Link
JP (1) JPS60208155A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
JPH0256872B2 (enrdf_load_stackoverflow) 1990-12-03

Similar Documents

Publication Publication Date Title
US4087646A (en) Dual mode telephone subscriber loop current detector
US3671676A (en) Subscriber loop range extender
EP0034339A1 (en) Telephone circuit for off-hook detection during ringing
EP0210941B1 (en) Selective ringing circuit for a telephone
US3784756A (en) Subscriber loop range extender
US3420963A (en) Communication system line circuit particularly for key telephone systems
JPS60208155A (ja) 公衆電話機
US3728490A (en) Post pay telephone paystation circuit
US4101741A (en) Line circuit for key telephone systems
US3579253A (en) Coin telephone circuit for dial-tone-first service
US4099031A (en) Method and apparatus for automatically identifying an individual calling party on a multiparty telephone line
US5867560A (en) Remote hang-up detector
US3965306A (en) Telephone line transfer circuit
US4199659A (en) Electronic prepay adapter circuit for central office telephone equipment
US4009354A (en) Signalling device for key telephone systems
US4164713A (en) Dual mode telephone subscriber loop current detector
US3730999A (en) Telephone ring-trip circuit
US4101740A (en) Line circuit for key telephone systems
US2281062A (en) Telephone system
JPS6039970A (ja) 極性反転検出回路
JPH057909B2 (enrdf_load_stackoverflow)
US4039762A (en) Key telephone off-premises line circuit
CA1079879A (en) Line circuit for key telephone systems
US4058685A (en) Interoffice loop supervision arrangement
USRE13795E (en) Signaling system