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PCE
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IPC Subgroup
H04M 3/22

Arrangements for supervision, monitoring or testing

Introduced: September 1968

Last revised: January 2006

Full Title

Automatic or semi-automatic exchanges > Arrangements for supervision, monitoring or testing

Classification Context

Section:
ELECTRICITY
Class:
ELECTRIC COMMUNICATION TECHNIQUE
Subclass:
TELEPHONIC COMMUNICATION

Related Keywords

MONITORING of telephonic communication systems

3 direct subcodes

Child Classifications

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  • H04M 3/24 with provision for checking the normal operation
  • H04M 3/36 Statistical metering, e.g. recording occasions when traffic exceeds capacity of trunks