JPS55124392A - Digital communication system - Google Patents

Digital communication system

Info

Publication number
JPS55124392A
JPS55124392A JP3245579A JP3245579A JPS55124392A JP S55124392 A JPS55124392 A JP S55124392A JP 3245579 A JP3245579 A JP 3245579A JP 3245579 A JP3245579 A JP 3245579A JP S55124392 A JPS55124392 A JP S55124392A
Authority
JP
Japan
Prior art keywords
bit
subscriber
line
type
voice
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
JP3245579A
Other languages
Japanese (ja)
Inventor
Takehiko Yamaguchi
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 JP3245579A priority Critical patent/JPS55124392A/en
Publication of JPS55124392A publication Critical patent/JPS55124392A/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
    • H04Q11/0428—Integrated services digital network, i.e. systems for transmission of different types of digitised signals, e.g. speech, data, telecentral, television signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)

Abstract

PURPOSE:To secure the sharing for the voice and the data by applying the (8+2)- bit envelope on the subscriber's line and the 8-bit octet type at the transmission exchange system eash and then securing the mutual exchange between the both types. CONSTITUTION:Terminal side termination unit DCE of the digital subscriber's line converts the output of the composite terminal unit consisting of the digital telephone set and the digital data terminal unit into the transmission formart. Then the voice or the data information which are transmitted on the subscriber's line via the envelope of the (8+2)-bit type is received at exchange side termination unit DCCS. Then the (8+2)-bit envelope type and the 8-bit octet type are applied on the subscriber's line and at the transmission exchange system respectively. And the mutual exchange is secured between the both types, thus securing the common use for the voice and the data.
JP3245579A 1979-03-20 1979-03-20 Digital communication system Pending JPS55124392A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3245579A JPS55124392A (en) 1979-03-20 1979-03-20 Digital communication system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3245579A JPS55124392A (en) 1979-03-20 1979-03-20 Digital communication system

Publications (1)

Publication Number Publication Date
JPS55124392A true JPS55124392A (en) 1980-09-25

Family

ID=12359438

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3245579A Pending JPS55124392A (en) 1979-03-20 1979-03-20 Digital communication system

Country Status (1)

Country Link
JP (1) JPS55124392A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6139647A (en) * 1984-07-30 1986-02-25 Nec Corp Signaling signal transmitting device
JPS6172428A (en) * 1984-09-17 1986-04-14 Nec Corp Transmitter of control signal

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6139647A (en) * 1984-07-30 1986-02-25 Nec Corp Signaling signal transmitting device
JPH0546129B2 (en) * 1984-07-30 1993-07-13 Nippon Electric Co
JPS6172428A (en) * 1984-09-17 1986-04-14 Nec Corp Transmitter of control signal

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