JPS5556796A - Telephone connection control system - Google Patents

Telephone connection control system

Info

Publication number
JPS5556796A
JPS5556796A JP13022578A JP13022578A JPS5556796A JP S5556796 A JPS5556796 A JP S5556796A JP 13022578 A JP13022578 A JP 13022578A JP 13022578 A JP13022578 A JP 13022578A JP S5556796 A JPS5556796 A JP S5556796A
Authority
JP
Japan
Prior art keywords
circuit
user
users
terminal
trunk
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
JP13022578A
Other languages
Japanese (ja)
Inventor
Shinsuke Kadota
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 JP13022578A priority Critical patent/JPS5556796A/en
Publication of JPS5556796A publication Critical patent/JPS5556796A/en
Pending 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
    • H04Q3/62—Arrangements providing connection between main exchange and sub-exchange or satellite for connecting to private branch exchanges
    • H04Q3/625—Arrangements 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)
  • Exchange Systems With Centralized Control (AREA)

Abstract

PURPOSE:To omit the circuit which identifies the users and thus simplify the control system in case many users share one telephone set by setting up the private circuit for each user and thus limiting the connection between circuits for other users. CONSTITUTION:Line circuit 103 connected to plural number of subscriber telephone set 102 is provided, along with switch network 101, office attendant board 105 and common control circuit 106 connected to office trunk 104. These units are divided into plural groups to secure the correspondence to each user and in accordance with the sequence of the mechanical storage position numbers in network 101. Then the terminal of the line circuit in circuit 103, the terminal of the office trunk of trunk 104, and the terminal of the circuit of board 105 are connected to the comparator circuit provided in control circuit 106 to decide which group of the user each circuit number is belonging to. Then the user is selected via the exclusive OR gate circuit, and the connection is limited between circuits for other users.
JP13022578A 1978-10-23 1978-10-23 Telephone connection control system Pending JPS5556796A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13022578A JPS5556796A (en) 1978-10-23 1978-10-23 Telephone connection control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13022578A JPS5556796A (en) 1978-10-23 1978-10-23 Telephone connection control system

Publications (1)

Publication Number Publication Date
JPS5556796A true JPS5556796A (en) 1980-04-25

Family

ID=15029075

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13022578A Pending JPS5556796A (en) 1978-10-23 1978-10-23 Telephone connection control system

Country Status (1)

Country Link
JP (1) JPS5556796A (en)

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