Patent classifications
H
ELECTRICITY
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H04
ELECTRIC COMMUNICATION TECHNIQUE
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H04M
TELEPHONIC COMMUNICATION
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15/00
Arrangements for metering, time-control or time indication; ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
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H04M15/835
Time or frequency of notifications, e.g. Advice of Charge [AoC]
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H04M15/8355
after the end of the communication
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