JPS558170A - Network control unit - Google Patents

Network control unit

Info

Publication number
JPS558170A
JPS558170A JP8155878A JP8155878A JPS558170A JP S558170 A JPS558170 A JP S558170A JP 8155878 A JP8155878 A JP 8155878A JP 8155878 A JP8155878 A JP 8155878A JP S558170 A JPS558170 A JP S558170A
Authority
JP
Japan
Prior art keywords
terminal
answer
selection signal
sending
remote side
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
JP8155878A
Other languages
Japanese (ja)
Inventor
Hideo Inoue
Yukio Murata
Kohei Ogawa
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 JP8155878A priority Critical patent/JPS558170A/en
Publication of JPS558170A publication Critical patent/JPS558170A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks

Landscapes

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

Abstract

PURPOSE:To increase the using efficiency as well as to realize the economical performance of the control unit as a whole by giving a control so that the selection signal sending part may be cut off from the circuit answering part without waiting for the answer from the remote side and then released to the queuing state when the sending of the selection signal is over. CONSTITUTION:The originating request plus the number information of terminal D1 are sent to control part I from terminal A1. Thus part I checks circuit correspondence part F1 and then selects Hl which is under the queuing state among selection signal sending parts H1-Hn in case part F1 is idle with no collision between the outgoing and incoming, and Hl is connected to part F1 via switch connection part G. When the number information is given to Hl, the selection signal is transmitted from Hl. With end of this sending action, Hl is cut off from part F1 to be released. Part F1 detects the answer of the remote side through remote side answer detection part incorporated into F1 to inform the answer to part I, and the circuit is extended to terminal A1 to set the communication path. In the case of the outgoing from terminal D1, the detection part of F1 detects the incoming to inform it to part I. Thus, the circuits are closed at F1 and terminal A1.
JP8155878A 1978-07-05 1978-07-05 Network control unit Pending JPS558170A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8155878A JPS558170A (en) 1978-07-05 1978-07-05 Network control unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8155878A JPS558170A (en) 1978-07-05 1978-07-05 Network control unit

Publications (1)

Publication Number Publication Date
JPS558170A true JPS558170A (en) 1980-01-21

Family

ID=13749610

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8155878A Pending JPS558170A (en) 1978-07-05 1978-07-05 Network control unit

Country Status (1)

Country Link
JP (1) JPS558170A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56123165A (en) * 1980-03-04 1981-09-28 Nec Corp Simultaneous origination number control system
JPS5892349A (en) * 1981-11-19 1983-06-01 シ−メンス・アクチエンゲゼルシヤフト dental saliva ejector

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56123165A (en) * 1980-03-04 1981-09-28 Nec Corp Simultaneous origination number control system
JPS5892349A (en) * 1981-11-19 1983-06-01 シ−メンス・アクチエンゲゼルシヤフト dental saliva ejector

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