JPS54119814A - Composite exchange system - Google Patents

Composite exchange system

Info

Publication number
JPS54119814A
JPS54119814A JP2732678A JP2732678A JPS54119814A JP S54119814 A JPS54119814 A JP S54119814A JP 2732678 A JP2732678 A JP 2732678A JP 2732678 A JP2732678 A JP 2732678A JP S54119814 A JPS54119814 A JP S54119814A
Authority
JP
Japan
Prior art keywords
data
signal
digital
line
exchange
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
JP2732678A
Other languages
Japanese (ja)
Inventor
Hideo Kasahara
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 JP2732678A priority Critical patent/JPS54119814A/en
Publication of JPS54119814A publication Critical patent/JPS54119814A/en
Pending 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)

Abstract

PURPOSE:To enable to perform the exchange of the communication of line system for analog data with the digital data such as data terminal, by performing the establishment release of data link through the sue of digital data signal. CONSTITUTION:Composite exchange is made by feeding analog signal from the analog signal terminal 101-1 to one communication line and digital signal from the digital signal terminal 104. The signal data is detected with the line circuit 11 and controlled with the communication control 113, and it is selected to digital signal and exchange of connection signal is made with opposing stations under the control of CPU 130. On the other hand, the digital signal inputted from the digital signal terminal 104 is delivered to the line adaptor 121 installed via the communication control unit 120 in space division. Thus, the exchange between th communication of data line system of analog and the digital data such as data terminal can effectively be made via one delivery line.
JP2732678A 1978-03-09 1978-03-09 Composite exchange system Pending JPS54119814A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2732678A JPS54119814A (en) 1978-03-09 1978-03-09 Composite exchange system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2732678A JPS54119814A (en) 1978-03-09 1978-03-09 Composite exchange system

Publications (1)

Publication Number Publication Date
JPS54119814A true JPS54119814A (en) 1979-09-18

Family

ID=12217940

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2732678A Pending JPS54119814A (en) 1978-03-09 1978-03-09 Composite exchange system

Country Status (1)

Country Link
JP (1) JPS54119814A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63156496A (en) * 1986-12-19 1988-06-29 Fujitsu Ltd Line connection system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63156496A (en) * 1986-12-19 1988-06-29 Fujitsu Ltd Line connection system
JPH0445037B2 (en) * 1986-12-19 1992-07-23 Fujitsu Ltd

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