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PCE
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DIFF Subgroup
H04Q 3/04

Circuit arrangements for receivers of routing digits

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Selecting arrangements > Circuit arrangements for receivers of routing digits

CPC:

Selecting arrangements (H04Q5/00 - H04Q11/00 take precedence) > Circuit arrangements for receivers of routing digits

IPC and CPC are identically structured here. All 6 subcodes exist in both systems.

Child Classifications

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  • H04Q 3/06 for group or trunk group selectors IPC+CPC Available in IPC and CPC
  • H04Q 3/08 for local or long-distance selectors IPC+CPC Available in IPC and CPC
  • H04Q 3/10 for PBX selectors, i.e. private branch exchange selectors IPC+CPC Available in IPC and CPC
  • H04Q 3/12 for line selectors providing transfer of routing digits IPC+CPC Available in IPC and CPC
  • H04Q 3/14 for two-way operation selectors IPC+CPC Available in IPC and CPC
  • H04Q 3/16 for marking-switches IPC+CPC Available in IPC and CPC