JPS56132090A - Trunk line number collation system - Google Patents

Trunk line number collation system

Info

Publication number
JPS56132090A
JPS56132090A JP3559080A JP3559080A JPS56132090A JP S56132090 A JPS56132090 A JP S56132090A JP 3559080 A JP3559080 A JP 3559080A JP 3559080 A JP3559080 A JP 3559080A JP S56132090 A JPS56132090 A JP S56132090A
Authority
JP
Japan
Prior art keywords
trunk line
line number
dial
trunk
ext
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
JP3559080A
Other languages
Japanese (ja)
Inventor
Hidekazu Igarashi
Hanji Kobayashi
Norio Nagai
Yukio Shigeta
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.)
Meisei Electric Co Ltd
Original Assignee
Meisei 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 Meisei Electric Co Ltd filed Critical Meisei Electric Co Ltd
Priority to JP3559080A priority Critical patent/JPS56132090A/en
Publication of JPS56132090A publication Critical patent/JPS56132090A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q3/00Selecting arrangements
    • H04Q3/58Arrangements providing connection between main exchange and sub-exchange or satellite
    • H04Q3/62Arrangements providing connection between main exchange and sub-exchange or satellite for connecting to private branch exchanges
    • H04Q3/625Arrangements in the private branch exchange

Landscapes

  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)

Abstract

PURPOSE:To simplify the trunk line number collating circuit, by equalizing the pattern of receiving and storing operations of the dial signal for trunk line number collation from the extension subscriber to the pattern of receiving and storing operations of the normal dial signal. CONSTITUTION:When push-button dial telephone set EXT which is busy to the trunk line is hooked, trunk COT is acquired. When dial button ''0'' is depressed in this state, the dial signal corresponding to it is received, and the trunk line which this EXT is using is displayed on trunk line display board CLD, and thus, the trunk line number is confirmed. Next, when dial button ''1'' is depressed, the ''1'' dial signal is received by PB receiver PBRE and is read into central control device CC through oscillating register OR. Then, central control device CC extinguishes said display by the software processing and connects the trunk line suspended by trunk COT to EXT again. Consequently, a special circuit for trunk line number collation is not required.
JP3559080A 1980-03-19 1980-03-19 Trunk line number collation system Pending JPS56132090A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3559080A JPS56132090A (en) 1980-03-19 1980-03-19 Trunk line number collation system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3559080A JPS56132090A (en) 1980-03-19 1980-03-19 Trunk line number collation system

Publications (1)

Publication Number Publication Date
JPS56132090A true JPS56132090A (en) 1981-10-16

Family

ID=12445996

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3559080A Pending JPS56132090A (en) 1980-03-19 1980-03-19 Trunk line number collation system

Country Status (1)

Country Link
JP (1) JPS56132090A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60259045A (en) * 1984-06-06 1985-12-21 Meisei Electric Co Ltd System for collating external line and system of external line transfer
JPS6166454A (en) * 1984-09-10 1986-04-05 Nec Eng Ltd Trunk line number checking system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60259045A (en) * 1984-06-06 1985-12-21 Meisei Electric Co Ltd System for collating external line and system of external line transfer
JPS6166454A (en) * 1984-09-10 1986-04-05 Nec Eng Ltd Trunk line number checking system

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