JPS5487409A - Remote control switching system - Google Patents

Remote control switching system

Info

Publication number
JPS5487409A
JPS5487409A JP15586677A JP15586677A JPS5487409A JP S5487409 A JPS5487409 A JP S5487409A JP 15586677 A JP15586677 A JP 15586677A JP 15586677 A JP15586677 A JP 15586677A JP S5487409 A JPS5487409 A JP S5487409A
Authority
JP
Japan
Prior art keywords
memory
stored
changeover
new data
subordinate
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
JP15586677A
Other languages
Japanese (ja)
Other versions
JPS5842673B2 (en
Inventor
Osamu Miura
Shigehiro Tanaka
Katsutomo Itayama
Toru Nakagawa
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
Nippon Telegraph and Telephone Corp
Original Assignee
NEC Corp
Nippon Telegraph and Telephone 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 Telegraph and Telephone Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP15586677A priority Critical patent/JPS5842673B2/en
Publication of JPS5487409A publication Critical patent/JPS5487409A/en
Publication of JPS5842673B2 publication Critical patent/JPS5842673B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/58—Arrangements providing connection between main exchange and sub-exchange or satellite

Abstract

PURPOSE:To make an automatic changeover between a common-use memory and memory stored with new data by transmitting information on changeover assignment time and new data from a switching center station to several subordinate stations and by detecting them by timers in subordinate stations. CONSTITUTION:New data, sent out from center station 11 to subordinate stations 10 via switching unit 12, are written in standby memory 5 via data receiving write unit 6. Next, changeover time information is sent out to subordinate station 10 and stored in changeover-time memory 7. When the time indicated by timer 9 agrees with that stored in memory 7, the output of comparative coincidence detection circuit 8 is grounded to operate relay X. This contact (x) allows common-use memory 4 connected to processor 1 to switch to standby memory 5 stored with new data. In subordinate stations 10' and 10'', the same operations are performed.
JP15586677A 1977-12-23 1977-12-23 Remote control switching method Expired JPS5842673B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15586677A JPS5842673B2 (en) 1977-12-23 1977-12-23 Remote control switching method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15586677A JPS5842673B2 (en) 1977-12-23 1977-12-23 Remote control switching method

Publications (2)

Publication Number Publication Date
JPS5487409A true JPS5487409A (en) 1979-07-11
JPS5842673B2 JPS5842673B2 (en) 1983-09-21

Family

ID=15615208

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15586677A Expired JPS5842673B2 (en) 1977-12-23 1977-12-23 Remote control switching method

Country Status (1)

Country Link
JP (1) JPS5842673B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06311261A (en) * 1993-04-27 1994-11-04 Tamura Electric Works Ltd Public telephone system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06311261A (en) * 1993-04-27 1994-11-04 Tamura Electric Works Ltd Public telephone system

Also Published As

Publication number Publication date
JPS5842673B2 (en) 1983-09-21

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