JPS56107666A - Discount charge telephone system - Google Patents

Discount charge telephone system

Info

Publication number
JPS56107666A
JPS56107666A JP1034780A JP1034780A JPS56107666A JP S56107666 A JPS56107666 A JP S56107666A JP 1034780 A JP1034780 A JP 1034780A JP 1034780 A JP1034780 A JP 1034780A JP S56107666 A JPS56107666 A JP S56107666A
Authority
JP
Japan
Prior art keywords
call
discount
case
service
circuit
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.)
Pending
Application number
JP1034780A
Other languages
Japanese (ja)
Inventor
Toshihiko Watanabe
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP1034780A priority Critical patent/JPS56107666A/en
Publication of JPS56107666A publication Critical patent/JPS56107666A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
    • H04Q3/54—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Exchange Systems With Centralized Control (AREA)

Abstract

PURPOSE:To effectively use a circuit by focibly cutting off the service beginning of the discount call which has started the service earlier, and prefentially connecting a general call, in case a new general call has entered, when all the talking circuits are being used. CONSTITUTION:It is informed to the common control unit CC of the own station that a subscriber who desires a discount call has requested a discount call by dialing the special number. The unit CC stores the subscriber's number into the discout call exclusive memory NODR, and reads out the discount message billing index from the magnetic drum DR. In this case, in case a subscriber B who desires a general call has requested the service, if it has been confirmed that all the trunks are occupied and the service cannot be connected, the unit CC checks up if there is discount call in the memory NODR. In case there is a discount call, the circuit used by the discount call is forcibly cut off by the forced cutting circuit SW. After that, the general call is connected to said circuit which has been cut off forcibly.
JP1034780A 1980-01-31 1980-01-31 Discount charge telephone system Pending JPS56107666A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1034780A JPS56107666A (en) 1980-01-31 1980-01-31 Discount charge telephone system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1034780A JPS56107666A (en) 1980-01-31 1980-01-31 Discount charge telephone system

Publications (1)

Publication Number Publication Date
JPS56107666A true JPS56107666A (en) 1981-08-26

Family

ID=11747650

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1034780A Pending JPS56107666A (en) 1980-01-31 1980-01-31 Discount charge telephone system

Country Status (1)

Country Link
JP (1) JPS56107666A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015198378A (en) * 2014-04-02 2015-11-09 東日本電信電話株式会社 Telephone system and call connection method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015198378A (en) * 2014-04-02 2015-11-09 東日本電信電話株式会社 Telephone system and call connection method

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