JPS5424506A - Modem control unit of semi-double type - Google Patents

Modem control unit of semi-double type

Info

Publication number
JPS5424506A
JPS5424506A JP8944877A JP8944877A JPS5424506A JP S5424506 A JPS5424506 A JP S5424506A JP 8944877 A JP8944877 A JP 8944877A JP 8944877 A JP8944877 A JP 8944877A JP S5424506 A JPS5424506 A JP S5424506A
Authority
JP
Japan
Prior art keywords
semi
control unit
modem control
double type
modem
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
JP8944877A
Other languages
Japanese (ja)
Other versions
JPS5614017B2 (en
Inventor
Shigeo Kobayashi
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP8944877A priority Critical patent/JPS5424506A/en
Publication of JPS5424506A publication Critical patent/JPS5424506A/en
Publication of JPS5614017B2 publication Critical patent/JPS5614017B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H04L5/16—Half-duplex systems; Simplex/duplex switching; Transmission of break signals non-automatically inverting the direction of transmission

Landscapes

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

Abstract

PURPOSE:To enable any of the data delivery of short range with the terminal control unit by one terminal unit and of long range by semi-double MODEM, without adding the functions to control semidouble MODEM to the terminal unit.
JP8944877A 1977-07-26 1977-07-26 Modem control unit of semi-double type Granted JPS5424506A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8944877A JPS5424506A (en) 1977-07-26 1977-07-26 Modem control unit of semi-double type

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8944877A JPS5424506A (en) 1977-07-26 1977-07-26 Modem control unit of semi-double type

Publications (2)

Publication Number Publication Date
JPS5424506A true JPS5424506A (en) 1979-02-23
JPS5614017B2 JPS5614017B2 (en) 1981-04-01

Family

ID=13970956

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8944877A Granted JPS5424506A (en) 1977-07-26 1977-07-26 Modem control unit of semi-double type

Country Status (1)

Country Link
JP (1) JPS5424506A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56137749A (en) * 1980-03-28 1981-10-27 Nec Corp Synchronism establishment system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56137749A (en) * 1980-03-28 1981-10-27 Nec Corp Synchronism establishment system
JPH0361384B2 (en) * 1980-03-28 1991-09-19 Nippon Electric Co

Also Published As

Publication number Publication date
JPS5614017B2 (en) 1981-04-01

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