IPC Subgroup
H04Q 3/6 for connecting to 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
Selecting arrangements > Arrangements providing connection between main exchange and sub-exchange or satellite > for connecting to 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:
- SELECTING