SISTEMA DE TRANSMISSAO DE INFORMACOES DIGITAL

A digital communications transmission system includes calling and called digital terminals which are interconnected with a two-wire line or a four-wire line by way of respective termination sets. Each terminal includes a transmitter, a receiver and a calling device. The transmission system is partic...

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Bibliographic Details
Main Author STREHL H
Format Patent
LanguagePortuguese
Published 09.10.1979
Edition3
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
SELECTING
TRANSMISSION
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Summary:A digital communications transmission system includes calling and called digital terminals which are interconnected with a two-wire line or a four-wire line by way of respective termination sets. Each terminal includes a transmitter, a receiver and a calling device. The transmission system is particularly characterized in that there is provided in the calling terminal a transmitter which transmits signals in a first frequency position and a receiver which receives signals in a second frequency position, while the called terminal includes a transmitter which transmits signals in the second frequency position and a receiver which receives signals in the first frequency position.
Bibliography:Application Number: BR19797901158