Patent classifications
H
ELECTRICITY
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H04
ELECTRIC COMMUNICATION TECHNIQUE
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H04L
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
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Arrangements for detecting or preventing errors in the information received
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H04L1/24
Testing correct operation
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H04L1/242
by comparing a transmitted test signal with a locally generated replica
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H04L1/243
at the transmitter, using a loop-back
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