JPS56149147A - Inter-network connection and communication system - Google Patents

Inter-network connection and communication system

Info

Publication number
JPS56149147A
JPS56149147A JP5277280A JP5277280A JPS56149147A JP S56149147 A JPS56149147 A JP S56149147A JP 5277280 A JP5277280 A JP 5277280A JP 5277280 A JP5277280 A JP 5277280A JP S56149147 A JPS56149147 A JP S56149147A
Authority
JP
Japan
Prior art keywords
circuit
switching
switching network
network
inter
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
JP5277280A
Other languages
Japanese (ja)
Other versions
JPS6132858B2 (en
Inventor
Tadashi Yatani
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP5277280A priority Critical patent/JPS56149147A/en
Publication of JPS56149147A publication Critical patent/JPS56149147A/en
Publication of JPS6132858B2 publication Critical patent/JPS6132858B2/ja
Granted 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)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

PURPOSE:To achieve proper data communication by providing an inter-network connection device between a digital data switching network and telephone switching network and by simplifying the constitution for mutual data communication between both the switching networks. CONSTITUTION:Inter-network connection device 3 is connected between digital switching network 1 having digital switching equipment 13 connected to full-duplex communication terminal 11 and telephone switching network 21 having telephone switching equipment 23 connected to half-duplex communication terminal 21. An envelope signal from switching network 1 is received by receiving-separating circuit 31 to detect data bits of the signal, and modulated by modulating circuit 32 with a carrier to be transferred to switching equipment 2 via hybrid circuit 33. On the basis of the carrier from switching network 2, the envelope signal having the prescribed contents of the data bits is applied to demodulating circuit 34 via circuit 33 and circuit 34 detects the carrier to apply its detection signal to envelope composing circuit 35, which transfers the envelope signal, having the prescribed contents given, to switching equipments 1, thereby achieving the proper data communication.
JP5277280A 1980-04-21 1980-04-21 Inter-network connection and communication system Granted JPS56149147A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5277280A JPS56149147A (en) 1980-04-21 1980-04-21 Inter-network connection and communication system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5277280A JPS56149147A (en) 1980-04-21 1980-04-21 Inter-network connection and communication system

Publications (2)

Publication Number Publication Date
JPS56149147A true JPS56149147A (en) 1981-11-18
JPS6132858B2 JPS6132858B2 (en) 1986-07-30

Family

ID=12924151

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5277280A Granted JPS56149147A (en) 1980-04-21 1980-04-21 Inter-network connection and communication system

Country Status (1)

Country Link
JP (1) JPS56149147A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007116722A1 (en) 2006-03-29 2007-10-18 Nec Corporation Communication system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007116722A1 (en) 2006-03-29 2007-10-18 Nec Corporation Communication system

Also Published As

Publication number Publication date
JPS6132858B2 (en) 1986-07-30

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