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PCE
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DIFF Subgroup
H04M 15/26

with a meter at the exchange controlled by an operator

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Arrangements for metering, time-control or time-indication > Metering calls from calling party > with a meter at the exchange controlled by an operator

CPC:

Arrangements for metering, time-control or time indication > Metering calls from calling party > with a meter at the exchange controlled by an operator

No child classifications to compare. This is a leaf node in both IPC and CPC.