DIFF Subgroup
H04Q 5/16 by predetermined number of pulses
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 pulses > by predetermined number of pulses
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 pulses > by predetermined number of pulses
No child classifications to compare. This is a leaf node in both IPC and CPC.