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PCE
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DIFF Subgroup
H04M 3/04

the calling signal being supplied from the final selector

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Automatic or semi-automatic exchanges > Calling substations, e.g. by ringing > the calling signal being supplied from the final selector

CPC:

Automatic or semi-automatic exchanges > Calling substations, e.g. by ringing (selective calling H04Q) > the calling signal being supplied from the final selector

No child classifications to compare. This is a leaf node in both IPC and CPC.