JPS5691574A - Connection control system of data transmission system - Google Patents

Connection control system of data transmission system

Info

Publication number
JPS5691574A
JPS5691574A JP16898779A JP16898779A JPS5691574A JP S5691574 A JPS5691574 A JP S5691574A JP 16898779 A JP16898779 A JP 16898779A JP 16898779 A JP16898779 A JP 16898779A JP S5691574 A JPS5691574 A JP S5691574A
Authority
JP
Japan
Prior art keywords
adp2
cpu
mod3
ncu
sends
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
JP16898779A
Other languages
Japanese (ja)
Other versions
JPS5833744B2 (en
Inventor
Noriaki Fujimura
Tsuneo Kinoshita
Masa Aono
Takashi Kako
Hiroya Tanaka
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 JP54168987A priority Critical patent/JPS5833744B2/en
Publication of JPS5691574A publication Critical patent/JPS5691574A/en
Publication of JPS5833744B2 publication Critical patent/JPS5833744B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Communication Control (AREA)

Abstract

PURPOSE:To improve the efficiency of the time of data transfer, by bringing a telephone number into an adapter while a network controller is detecting the originating register tone of a switchboard. CONSTITUTION:When a call signal from CPU is demodulated by modem MOD3, adapter ADP2 turns on a call signal line to network controller NCU. Simultaneously, ADP2 informs CPU of a telephone number request signal. Consequently, CPU sends the telephone number to ADP1. Next, ADP1 informs ADP2 of it and ADP2 stores it in its internal memory. As NCU turns on signal line IF3, ADP2 detects that and sends dial pulses to switchboard LF. Next, NCU sends a connection end signal to CPU. In response to it, CPU transfers transmitted data to MOD1. Then, MOD1 modulates and transmits it over a prescribed channel. Receiving it, MOD3 performs demodulation and supplies the demodulated data to MOD3'. After modulation, MOD3' sends it to a telephone circuit via NCU.
JP54168987A 1979-12-25 1979-12-25 Connection control method in data transmission system Expired JPS5833744B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54168987A JPS5833744B2 (en) 1979-12-25 1979-12-25 Connection control method in data transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54168987A JPS5833744B2 (en) 1979-12-25 1979-12-25 Connection control method in data transmission system

Publications (2)

Publication Number Publication Date
JPS5691574A true JPS5691574A (en) 1981-07-24
JPS5833744B2 JPS5833744B2 (en) 1983-07-21

Family

ID=15878244

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54168987A Expired JPS5833744B2 (en) 1979-12-25 1979-12-25 Connection control method in data transmission system

Country Status (1)

Country Link
JP (1) JPS5833744B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6177450A (en) * 1984-09-22 1986-04-21 Nec Corp Interface converter
US5996517A (en) * 1997-09-30 1999-12-07 Brother Kogyo Kabushiki Kaisha Sewing apparatus having color display controlling device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6177450A (en) * 1984-09-22 1986-04-21 Nec Corp Interface converter
JPH0426263B2 (en) * 1984-09-22 1992-05-06 Nippon Electric Co
US5996517A (en) * 1997-09-30 1999-12-07 Brother Kogyo Kabushiki Kaisha Sewing apparatus having color display controlling device

Also Published As

Publication number Publication date
JPS5833744B2 (en) 1983-07-21

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