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JPS5416904A - Analog-digital code converter for digital telephone exchange - Google Patents

Analog-digital code converter for digital telephone exchange

Info

Publication number
JPS5416904A
JPS5416904A JP8099677A JP8099677A JPS5416904A JP S5416904 A JPS5416904 A JP S5416904A JP 8099677 A JP8099677 A JP 8099677A JP 8099677 A JP8099677 A JP 8099677A JP S5416904 A JPS5416904 A JP S5416904A
Authority
JP
Japan
Prior art keywords
digital
analog
telephone exchange
code converter
digital code
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
JP8099677A
Other languages
Japanese (ja)
Other versions
JPS571194B2 (en
Inventor
Akira Horiki
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP8099677A priority Critical patent/JPS5416904A/en
Priority to US05/815,422 priority patent/US4143242A/en
Publication of JPS5416904A publication Critical patent/JPS5416904A/en
Publication of JPS571194B2 publication Critical patent/JPS571194B2/ja
Granted 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)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)

Abstract

PURPOSE:To secure a selection between normal 8K Hz and 82K Hz.PC code by supplying 32K Hz PCM code before band limitation directly to the channel in case the communication service is required.
JP8099677A 1976-07-14 1977-07-08 Analog-digital code converter for digital telephone exchange Granted JPS5416904A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP8099677A JPS5416904A (en) 1977-07-08 1977-07-08 Analog-digital code converter for digital telephone exchange
US05/815,422 US4143242A (en) 1976-07-14 1977-07-13 Analog-digital code converter in a digital telephone switching system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8099677A JPS5416904A (en) 1977-07-08 1977-07-08 Analog-digital code converter for digital telephone exchange

Publications (2)

Publication Number Publication Date
JPS5416904A true JPS5416904A (en) 1979-02-07
JPS571194B2 JPS571194B2 (en) 1982-01-09

Family

ID=13734091

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8099677A Granted JPS5416904A (en) 1976-07-14 1977-07-08 Analog-digital code converter for digital telephone exchange

Country Status (1)

Country Link
JP (1) JPS5416904A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62501391A (en) * 1985-01-09 1987-06-04 アメリカン テレフオン アンド テレグラフ カムパニ− Tri-state driver circuit

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0322119Y2 (en) * 1986-04-16 1991-05-14

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62501391A (en) * 1985-01-09 1987-06-04 アメリカン テレフオン アンド テレグラフ カムパニ− Tri-state driver circuit

Also Published As

Publication number Publication date
JPS571194B2 (en) 1982-01-09

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