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PCE
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CPC Subgroup
H04Q 5/08

Signalling by continuous AC

Full Title

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

2 direct subcodes

Child Classifications

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  • H04Q 5/10 using single frequencies for different subscribers
  • H04Q 5/12 using combinations of frequencies