JPS5384509A - Telephone set interface circuit - Google Patents

Telephone set interface circuit

Info

Publication number
JPS5384509A
JPS5384509A JP16055476A JP16055476A JPS5384509A JP S5384509 A JPS5384509 A JP S5384509A JP 16055476 A JP16055476 A JP 16055476A JP 16055476 A JP16055476 A JP 16055476A JP S5384509 A JPS5384509 A JP S5384509A
Authority
JP
Japan
Prior art keywords
interface circuit
telephone set
set interface
circuit
selctor
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
JP16055476A
Other languages
Japanese (ja)
Other versions
JPS576867B2 (en
Inventor
Takeshi Sakai
Susumu Eda
Toshiyuki Ishikawa
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.)
Fujitsu Ltd
Nippon Telegraph and Telephone Corp
Original Assignee
Fujitsu Ltd
Nippon Telegraph and Telephone 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 Fujitsu Ltd, Nippon Telegraph and Telephone Corp filed Critical Fujitsu Ltd
Priority to JP16055476A priority Critical patent/JPS5384509A/en
Publication of JPS5384509A publication Critical patent/JPS5384509A/en
Publication of JPS576867B2 publication Critical patent/JPS576867B2/ja
Granted legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q3/00Selecting arrangements
    • H04Q3/42Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker

Abstract

PURPOSE:To reduce the number of relays required in the circuit, by making common use the selctor switches for subscriber call signal supply and the selector switch to draw in the subscriber line test circuit.
JP16055476A 1976-12-29 1976-12-29 Telephone set interface circuit Granted JPS5384509A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16055476A JPS5384509A (en) 1976-12-29 1976-12-29 Telephone set interface circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16055476A JPS5384509A (en) 1976-12-29 1976-12-29 Telephone set interface circuit

Publications (2)

Publication Number Publication Date
JPS5384509A true JPS5384509A (en) 1978-07-26
JPS576867B2 JPS576867B2 (en) 1982-02-06

Family

ID=15717491

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16055476A Granted JPS5384509A (en) 1976-12-29 1976-12-29 Telephone set interface circuit

Country Status (1)

Country Link
JP (1) JPS5384509A (en)

Also Published As

Publication number Publication date
JPS576867B2 (en) 1982-02-06

Similar Documents

Publication Publication Date Title
JPS52139302A (en) Automatic circuit switching unit
JPS5384509A (en) Telephone set interface circuit
JPS53117922A (en) Absence reception voice answer skip system
JPS53145504A (en) Cordless telephone equipment
JPS54503A (en) Telephon set with selection terminal
JPS5478005A (en) Subscribersigma line control system
JPS52100803A (en) Call wating system
JPS51115712A (en) Call detection method in automatic telephone exchange
JPS53119606A (en) Double concentrating transmission system of tree-pair line
JPS5430707A (en) Six-wire switching system
JPS5345907A (en) Scanning system of telephone subscriber
JPS5429903A (en) Conference service system of key telephonen system
JPS5382105A (en) System for numbering guide and dial service attendant board
JPS5274201A (en) Display control circuit for key telephone system
JPS57168565A (en) Special common-battery service system
JPS51121203A (en) Telephone circuits
JPS52101907A (en) Shunt type current switching scanning method
JPS51144503A (en) Telephone set
JPS51147905A (en) Busy indication circuit in a switch-box type additional telephone set
JPS5689159A (en) Speaker switching telephone system
JPS5355905A (en) Automatic dialing system
JPS5331908A (en) Preset dial unit
JPS5296803A (en) Telephone unit
JPS5330207A (en) Telephone exchange unit
JPS5391508A (en) Transmission control system for sound signal