Arrangements affording multiple use of the transmission path

Introduced: September 1968

Of 7 combined children, 4 exist in both systems.

3 codes are CPC-only extensions.

Child Classifications

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H04L 5/0001 +4 CPC CPC only CPC only
H04L 5/003 +8 CPC CPC only CPC only
H04L 5/0091 +3 CPC CPC only CPC only
H04L 5/02 Channels characterised by the type of signal +1 CPC IPC+CPC Available in IPC and CPC
H04L 5/14 Two-way operation using the same type of signal, i.e. duplex +7 CPC IPC+CPC Available in IPC and CPC
H04L 5/20 using different combinations of lines, e.g. phantom working IPC+CPC Available in IPC and CPC
H04L 5/22 using time-division multiplexing +1 CPC IPC+CPC Available in IPC and CPC