IPC Subgroup
H04M 15/1 Metering calls from calling party
Introduced: September 1968
Last revised: January 2006
Full Title
Arrangements for metering, time-control or time-indication > Metering calls from calling party
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRIC COMMUNICATION TECHNIQUE
- Subclass:
- TELEPHONIC COMMUNICATION
2 direct subcodes
Child Classifications
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- H04M 15/12 Discriminative metering
- H04M 15/26 with a meter at the exchange controlled by an operator