DIFF Subgroup
H04M 3/424 Arrangements for automatic redialling (at the subscriber's set H04M1/27)
Introduced: January 2000
Title
Titles differ between systems:
IPC: Arrangements for automatic redialling
CPC: Arrangements for automatic redialling (at the subscriber's set H04M1/27)
Full Title
Full titles differ between systems:
IPC:
Automatic or semi-automatic exchanges > Systems providing special services or facilities to subscribers > Arrangements for automatic redialling
CPC:
Automatic or semi-automatic exchanges > Systems providing special services or facilities to subscribers (specially adapted for wireless communication networks H04W4/00) > Arrangements for automatic redialling (at the subscriber's set H04M1/27)
No child classifications to compare. This is a leaf node in both IPC and CPC.