characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks] (wireless communication networks H04W )

Introduced: January 1990

Title

Titles differ between systems:

IPC: characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]

CPC: characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks] (wireless communication networks H04W )

Full Title

Full titles differ between systems:

IPC:

Data switching networks > characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]

CPC:

Data switching networks (interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units G06F13/00) > characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks] (wireless communication networks H04W )

Of 8 combined children, 4 exist in both systems.

4 codes are CPC-only extensions.

IPC defines codes here since 1990.

Child Classifications

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H04L 12/2801 CPC only CPC only
H04L 12/2803 +8 CPC CPC only CPC only
H04L 12/2852 CPC only CPC only
H04L 12/2854 +1 CPC CPC only CPC only
H04L 12/40 Bus networks since 1990 +8 CPC IPC+CPC Available in IPC and CPC
H04L 12/42 Loop networks since 1990 +2 CPC IPC+CPC Available in IPC and CPC
H04L 12/44 Star or tree networks since 1990 +1 CPC IPC+CPC Available in IPC and CPC
H04L 12/46 Interconnection of networks since 1990 +4 CPC IPC+CPC Available in IPC and CPC