IPC Definitions - January 01, 2012

H04B 17/00 - Definition fr

Definition statement

This main group covers:

Methods and apparatus for determining the manner in which a transmission system is functioning or the existence, type and location of any trouble.

References relevant to classification in this main group

This main group does not cover:

Monitoring, testing line transmission systems

H04B 3/46

Equipment for monitoring, testing transmission systems employing electromagnetic waves other than radio waves, e.g. light, infra-red

H04B 10/08