DIFF Subgroup
H04Q 3/605 Full Title
Selecting arrangements (H04Q5/00 - H04Q11/00 take precedence) > 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
Of 1 combined children, 0 exist in both systems.
1 codes are CPC-only extensions.