JPS5721155A - Transmission system for connecting information - Google Patents

Transmission system for connecting information

Info

Publication number
JPS5721155A
JPS5721155A JP9606280A JP9606280A JPS5721155A JP S5721155 A JPS5721155 A JP S5721155A JP 9606280 A JP9606280 A JP 9606280A JP 9606280 A JP9606280 A JP 9606280A JP S5721155 A JPS5721155 A JP S5721155A
Authority
JP
Japan
Prior art keywords
dial number
switch
point
power supply
strobe signal
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
JP9606280A
Other languages
Japanese (ja)
Inventor
Hajime Kakehi
Osamu Yoshida
Kunio Nozawa
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 JP9606280A priority Critical patent/JPS5721155A/en
Publication of JPS5721155A publication Critical patent/JPS5721155A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/26—Devices for calling a subscriber
    • H04M1/30—Devices which can set up and transmit only one digit at a time
    • H04M1/31—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses
    • H04M1/312—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses pulses produced by electronic circuits

Abstract

PURPOSE:To simplify the device constitution, by transmitting a callout request signal and a dial number on the same line and transmitting the dial number serially. CONSTITUTION:The callout request is made at a terminal device 1 by connecting a switch S3 to a power supply E1. In a network controller 3, the callout request is detected with a high level of a point 3', and when the line is vacant, a switch S1 is connected to a power supply E2 to transmit a dial number request signal. In the terminal device 1, the high level of point 1' is detected to know possible dialing, and the dial number if transmitted by connecting a switch S3 to the power supply E1 intermittently. At the dial number transmission, to transmit the strobe signal 2', a switch S2 is turned to ON. In the network controller 3, a pulse in which the point of 2' appears at the point of 3' during the low level, is counted by a counter CT every digit and reading out is made when the strobe signal is absent, awaiting the next strobe signal after reset.
JP9606280A 1980-07-14 1980-07-14 Transmission system for connecting information Pending JPS5721155A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9606280A JPS5721155A (en) 1980-07-14 1980-07-14 Transmission system for connecting information

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9606280A JPS5721155A (en) 1980-07-14 1980-07-14 Transmission system for connecting information

Publications (1)

Publication Number Publication Date
JPS5721155A true JPS5721155A (en) 1982-02-03

Family

ID=14154941

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9606280A Pending JPS5721155A (en) 1980-07-14 1980-07-14 Transmission system for connecting information

Country Status (1)

Country Link
JP (1) JPS5721155A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53101934A (en) * 1977-02-17 1978-09-05 Sanyo Electric Co Ltd Color television set of projection type

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53101934A (en) * 1977-02-17 1978-09-05 Sanyo Electric Co Ltd Color television set of projection type
JPS6129198B2 (en) * 1977-02-17 1986-07-04 Sanyo Electric Co

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