TREA

Charging, billing or metering arrangements for private branch exchanges

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Industry

  • CPC
  • H04M15/34
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Parent Industries

HELECTRICITY H04Electric communication H04MTELEPHONIC COMMUNICATION H04M15/00Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications

Current Industry

H04M15/34Charging, billing or metering arrangements for private branch exchanges
Industries