Patent classifications
H
ELECTRICITY
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H04
ELECTRIC COMMUNICATION TECHNIQUE
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H04M
TELEPHONIC COMMUNICATION
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3/00
Automatic or semi-automatic exchanges
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H04M3/22
Arrangements for supervision, monitoring or testing
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H04M3/36
Statistical metering, e.g. recording occasions when traffic exceeds capacity of trunks
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H04M3/367
Traffic or load control
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