JPS5662492A - Forced cut-off system for inter-office trunk line - Google Patents

Forced cut-off system for inter-office trunk line

Info

Publication number
JPS5662492A
JPS5662492A JP13833379A JP13833379A JPS5662492A JP S5662492 A JPS5662492 A JP S5662492A JP 13833379 A JP13833379 A JP 13833379A JP 13833379 A JP13833379 A JP 13833379A JP S5662492 A JPS5662492 A JP S5662492A
Authority
JP
Japan
Prior art keywords
inter
tone
time
trunk line
alarm tone
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
JP13833379A
Other languages
Japanese (ja)
Inventor
Tomio Furukawa
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 JP13833379A priority Critical patent/JPS5662492A/en
Publication of JPS5662492A publication Critical patent/JPS5662492A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0016—Arrangements providing connection between exchanges

Abstract

PURPOSE:To lower the rate of busy call of line for inter-office trunk line and to enable effective use, by transmitting alarm tone after a given time elapsed for the communication time of inter-office trunk line, and cutting off the relay line between the stations compulsively after a plurality of transmission of alarm tone. CONSTITUTION:The monitor of communication time is started at the same time when the communication is started between inter-office trunk line 10 between stations and a subscriber telephone set 11, and after a time, alarm tone 12 is delivered for a given time to the set 11 during communication. When the subscriber hears the alarm tone, it must take notice that the call can quickly be finished. When alarm tone is once delivered, the monitor of the next communication time is started and the alarm tone is again delivered after a given time. For a given number of times, for example, alarm tone is delivered twice, the connection between the set 11 and the inter-office trunk line 10 is compulsively cut off, busy tone is given to the set 11 from a busy tone signal tone trunk 13, which is given to the subscriber.
JP13833379A 1979-10-26 1979-10-26 Forced cut-off system for inter-office trunk line Pending JPS5662492A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13833379A JPS5662492A (en) 1979-10-26 1979-10-26 Forced cut-off system for inter-office trunk line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13833379A JPS5662492A (en) 1979-10-26 1979-10-26 Forced cut-off system for inter-office trunk line

Publications (1)

Publication Number Publication Date
JPS5662492A true JPS5662492A (en) 1981-05-28

Family

ID=15219449

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13833379A Pending JPS5662492A (en) 1979-10-26 1979-10-26 Forced cut-off system for inter-office trunk line

Country Status (1)

Country Link
JP (1) JPS5662492A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995004422A1 (en) * 1993-07-30 1995-02-09 Rauland-Borg Corporation Method and apparatus for limiting the duration of a telephone call
US5454033A (en) * 1993-08-02 1995-09-26 Rauland-Borg Corporation Apparatus and method for controlling access to a telephone

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995004422A1 (en) * 1993-07-30 1995-02-09 Rauland-Borg Corporation Method and apparatus for limiting the duration of a telephone call
US5454033A (en) * 1993-08-02 1995-09-26 Rauland-Borg Corporation Apparatus and method for controlling access to a telephone

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