IPC Subgroup
H04M 3/34 Testing for cross-talk
Introduced: September 1968
Last revised: January 2006
Full Title
Automatic or semi-automatic exchanges > Arrangements for supervision, monitoring or testing > with means for applying test signals > Testing for cross-talk
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRIC COMMUNICATION TECHNIQUE
- Subclass:
- TELEPHONIC COMMUNICATION