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JPS5733888A - Time division exchange system - Google Patents

Time division exchange system

Info

Publication number
JPS5733888A
JPS5733888A JP10867280A JP10867280A JPS5733888A JP S5733888 A JPS5733888 A JP S5733888A JP 10867280 A JP10867280 A JP 10867280A JP 10867280 A JP10867280 A JP 10867280A JP S5733888 A JPS5733888 A JP S5733888A
Authority
JP
Japan
Prior art keywords
circuit
exchange
companding
wire
time division
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
JP10867280A
Other languages
Japanese (ja)
Inventor
Yoshirou Nishimura
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 JP10867280A priority Critical patent/JPS5733888A/en
Publication of JPS5733888A publication Critical patent/JPS5733888A/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)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)

Abstract

PURPOSE:To hold the service efficiency of an analog circuit at a high quality, by providing a linear encoding device on an A/D converting circuit, and also providing a prescribed companding circuit on a digital circuit to be connected to the opposite station. CONSTITUTION:A subscriber's terminal SUB which is stored in an exchange generally consists of a 2-wire system, and in order to execute an exchange by a time division exchange system, it is necessary to A/D-convert a call signal of a circuit, therefore, a 2-wire-4-wire converting circuit HYB is used, and a signal which has been separated to transmission and receiving signals is converted to a digital signal. On the other hand, a digital circuit uses a transmission system according to a companding rule which has been decided internationally, therefore, when it is stored directly in the exchange, it is necessary to provide a companding circuit COMP/EXP for returning to an original sampling data on the basis of a companding rule which is adopted in every circuit.
JP10867280A 1980-08-07 1980-08-07 Time division exchange system Pending JPS5733888A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10867280A JPS5733888A (en) 1980-08-07 1980-08-07 Time division exchange system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10867280A JPS5733888A (en) 1980-08-07 1980-08-07 Time division exchange system

Publications (1)

Publication Number Publication Date
JPS5733888A true JPS5733888A (en) 1982-02-24

Family

ID=14490744

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10867280A Pending JPS5733888A (en) 1980-08-07 1980-08-07 Time division exchange system

Country Status (1)

Country Link
JP (1) JPS5733888A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07203593A (en) * 1993-12-13 1995-08-04 Trw Inc Thin film voltage tuning semiconductor bulk acoustic resonator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07203593A (en) * 1993-12-13 1995-08-04 Trw Inc Thin film voltage tuning semiconductor bulk acoustic resonator

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