DIFF Subgroup
H04L 12/02 Details
Introduced: January 1990
Full Title
Full titles differ between systems:
IPC:
Data switching networks > Details
CPC:
Data switching networks (interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units G06F13/00) > Details
IPC and CPC are identically structured here. All 8 subcodes exist in both systems.
1 shared codes have differing titles between IPC and CPC.
IPC defines codes here since 1990.
Child Classifications
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- H04L 12/08 Allotting numbers to messages; Counting characters, words or messages since 1990 IPC+CPC Available in IPC and CPC
- H04L 12/12 Arrangements for remote connection or disconnection of substations or of equipment thereof since 1990 IPC+CPC Available in IPC and CPC
- H04L 12/14 Charging, metering or billing arrangements specially adapted for data communications, e.g. authentication, authorisation and accounting [AAA] framework since 1990 +8 CPC IPC+CPC Available in IPC and CPC
- H04L 12/16 Arrangements for providing special services to substations since 1990 −1 IPC IPC+CPC Available in IPC and CPC
- H04L 12/22 Arrangements for preventing the taking of data from a data transmission channel without authorisation (means for verifying the identity or the authority of a user of a secure or secret communication system H04L9/32) since 1990 IPC+CPC Available in IPC and CPC