Arrangements for supervision, monitoring or testing

Introduced: September 1968

Full Title

Automatic or semi-automatic exchanges > Arrangements for supervision, monitoring or testing

CPC subdivides this area 4x more granularly than IPC with 9 additional codes.

9 codes are CPC-only extensions.

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H04M 3/2209 CPC only CPC only
H04M 3/2218 CPC only CPC only
H04M 3/2227 CPC only CPC only
H04M 3/2236 CPC only CPC only
H04M 3/2245 CPC only CPC only
H04M 3/2254 +1 CPC CPC only CPC only
H04M 3/2272 CPC only CPC only
H04M 3/2281 CPC only CPC only
H04M 3/229 CPC only CPC only
H04M 3/24 with provision for checking the normal operation +4 CPC IPC+CPC Available in IPC and CPC
H04M 3/26 with means for applying test signals IPC+CPC Available in IPC and CPC
H04M 3/36 Statistical metering, e.g. recording occasions when traffic exceeds capacity of trunks +3 CPC IPC+CPC Available in IPC and CPC