IPC Subgroup
H04M 15/32 Metering arrangements for satellites or concentrators which connect one or more exchange lines with a group of local lines
Introduced: September 1968
Last revised: January 2006
Full Title
Arrangements for metering, time-control or time-indication > Metering arrangements for satellites or concentrators which connect one or more exchange lines with a group of local lines
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRIC COMMUNICATION TECHNIQUE
- Subclass:
- TELEPHONIC COMMUNICATION