JPS5525261A - Digital transmission system for aural signal - Google Patents

Digital transmission system for aural signal

Info

Publication number
JPS5525261A
JPS5525261A JP9822378A JP9822378A JPS5525261A JP S5525261 A JPS5525261 A JP S5525261A JP 9822378 A JP9822378 A JP 9822378A JP 9822378 A JP9822378 A JP 9822378A JP S5525261 A JPS5525261 A JP S5525261A
Authority
JP
Japan
Prior art keywords
circuit
transmission system
aural signal
public
calling
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
JP9822378A
Other languages
Japanese (ja)
Inventor
Osamu Takahashi
Masamichi Iwama
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 JP9822378A priority Critical patent/JPS5525261A/en
Publication of JPS5525261A publication Critical patent/JPS5525261A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)

Abstract

PURPOSE:To secure an easy connection of the calling within the packet transmission system to the public circuit by delivering the calling within the packet transmission system through the code conversion circuit when the connection to the public circuit is required and through the packet formation circuit when no request is given respectively. CONSTITUTION:Dial signal decision circuit 5 decides whether the dial signal transmitted from the telephone prior to the aural signal requests the connection to the public circuit. And in case the request exists, the aural signal received A/D conversion 7 is delivered 4 from code conversion circuit 9 via the selection circuit. While in case no request is given, the A/D-converted 7 aural signal is delivered 4 from the selection circuit via packet formation circuit 8. In this way, the calling sent from within the packet transmission system can be connected to the public circuit in a simple way.
JP9822378A 1978-08-14 1978-08-14 Digital transmission system for aural signal Pending JPS5525261A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9822378A JPS5525261A (en) 1978-08-14 1978-08-14 Digital transmission system for aural signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9822378A JPS5525261A (en) 1978-08-14 1978-08-14 Digital transmission system for aural signal

Publications (1)

Publication Number Publication Date
JPS5525261A true JPS5525261A (en) 1980-02-22

Family

ID=14213954

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9822378A Pending JPS5525261A (en) 1978-08-14 1978-08-14 Digital transmission system for aural signal

Country Status (1)

Country Link
JP (1) JPS5525261A (en)

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