JPS55166394A - Trunk release control system - Google Patents

Trunk release control system

Info

Publication number
JPS55166394A
JPS55166394A JP7506179A JP7506179A JPS55166394A JP S55166394 A JPS55166394 A JP S55166394A JP 7506179 A JP7506179 A JP 7506179A JP 7506179 A JP7506179 A JP 7506179A JP S55166394 A JPS55166394 A JP S55166394A
Authority
JP
Japan
Prior art keywords
relay
release
time
end collision
release time
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
JP7506179A
Other languages
Japanese (ja)
Other versions
JPS5826238B2 (en
Inventor
Toshio Matsuda
Ryoji Ogata
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
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP7506179A priority Critical patent/JPS5826238B2/en
Publication of JPS55166394A publication Critical patent/JPS55166394A/en
Publication of JPS5826238B2 publication Critical patent/JPS5826238B2/en
Expired 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Interface Circuits In Exchanges (AREA)

Abstract

PURPOSE:To decrease the number of the using relays and to prevent the rear-end collision of the next call after the end of talking by using the necessary and partial relay to the digit counting circuit. CONSTITUTION:When relay B has a reslease by the ring-off of the extension telephone, the velocity release is secured for relay group X excepting one of the digit counting circuits operating with the specified digit. And the delay release is given to one remaining relay Y in a longer time than the release time of relay B. Accordingly, the loop opening time to the main wire is delayed by the amount equivalent to the release time of relay B. However, the opening time is increased since the release time of relay C is delayed by the amount equivalent to the release time of relay Y. As a result, the rear-end collision can be avoided. Thus the number of the using relays can be decreased to attain a big economical effect for the release control of the central office trunk to prevent the rear-end collision when the connection is given to the next call after the ring-off between the extension and the main wire.
JP7506179A 1979-06-14 1979-06-14 Trunk recovery control method Expired JPS5826238B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7506179A JPS5826238B2 (en) 1979-06-14 1979-06-14 Trunk recovery control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7506179A JPS5826238B2 (en) 1979-06-14 1979-06-14 Trunk recovery control method

Publications (2)

Publication Number Publication Date
JPS55166394A true JPS55166394A (en) 1980-12-25
JPS5826238B2 JPS5826238B2 (en) 1983-06-01

Family

ID=13565307

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7506179A Expired JPS5826238B2 (en) 1979-06-14 1979-06-14 Trunk recovery control method

Country Status (1)

Country Link
JP (1) JPS5826238B2 (en)

Also Published As

Publication number Publication date
JPS5826238B2 (en) 1983-06-01

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