DIFF Subgroup
H04Q 5/08 Signalling by continuous AC
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange > with direct connection for all subscribers, i.e. party-line system > Signalling by continuous AC
CPC:
Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange > with direct connection for all subscribers, i.e. party-line systems (H04Q5/24 takes precedence) > Signalling by continuous AC
IPC and CPC are identically structured here. All 2 subcodes exist in both systems.
Child Classifications
Navigate with arrow keys, Enter to open