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PCE
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DIFF Subgroup
H04M 15/12

Discriminative metering

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Arrangements for metering, time-control or time-indication > Metering calls from calling party > Discriminative metering

CPC:

Arrangements for metering, time-control or time indication > Metering calls from calling party > Discriminative metering

IPC and CPC are identically structured here. All 5 subcodes exist in both systems.

1 shared codes have differing titles between IPC and CPC.

Child Classifications

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  • H04M 15/14 according to class of calling party IPC+CPC Available in IPC and CPC
  • H04M 15/16 according to connection obtained IPC+CPC Available in IPC and CPC
  • H04M 15/22 according to time of day IPC+CPC Available in IPC and CPC
  • H04M 15/24 preventing metering of tax-free calls to certain lines, e.g. to fire or ambulance stations IPC+CPC Available in IPC and CPC