Arrangements for signalling the number or class of the calling line to the operator (between operators in inter- exchange working H04M5/18)

Introduced: September 1968

Title

Titles differ between systems:

IPC: Arrangements for signalling the number or class of the calling line to the operator

CPC: Arrangements for signalling the number or class of the calling line to the operator (between operators in inter- exchange working H04M5/18)

Full Title

Full titles differ between systems:

IPC:

Automatic or semi-automatic exchanges > Semi-automatic systems, i.e. systems in which the numerical selection of the outgoing line is under the control of an operator > Arrangements for signalling the number or class of the calling line to the operator

CPC:

Automatic or semi-automatic exchanges > Semi-automatic systems, i.e. in which the numerical selection of the outgoing line is under the control of an operator > Arrangements for signalling the number or class of the calling line to the operator (between operators in inter- exchange working H04M5/18)

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