Selecting arrangements (H04Q5/00 - H04Q11/00 take precedence)

Child Classifications

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• H04Q 3/0004 CPC only CPC only
• H04Q 3/0008 +1 CPC CPC only CPC only
• H04Q 3/0016 +4 CPC CPC only CPC only
• H04Q 3/02 Circuit arrangements for selectors responsive to a permutation code IPC+CPC Available in IPC and CPC
• H04Q 3/04 Circuit arrangements for receivers of routing digits IPC+CPC Available in IPC and CPC
• H04Q 3/18 Circuit arrangements for first stage of hunting switching IPC+CPC Available in IPC and CPC
• H04Q 3/32 Circuit arrangements for second or subsequent stages of hunting switching IPC+CPC Available in IPC and CPC
• H04Q 3/42 Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker IPC+CPC Available in IPC and CPC
• H04Q 3/58 Arrangements providing connection between main exchange and sub-exchange or satellite IPC+CPC Available in IPC and CPC
• H04Q 3/64 Distributing or queueing +1 CPC IPC+CPC Available in IPC and CPC
• H04Q 3/70 Identification of class of calling subscriber IPC+CPC Available in IPC and CPC
• H04Q 3/72 Finding out and indicating number of calling subscriber IPC+CPC Available in IPC and CPC
• H04Q 3/76 Translation from the called subscriber's number to the outgoing or incoming control information since 1985 IPC+CPC Available in IPC and CPC
• H04Q 3/78 Temporary storage of information of calling or called subscriber (intermediate storage means for telegraphic communication H04L13/08) since 1985 IPC+CPC Available in IPC and CPC