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PCE
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DIFF Subgroup
H04M 1/656

for recording conversations

Introduced: January 2000

Full Title

Full titles differ between systems:

IPC:

Substation equipment, e.g. for use by subscribers > Automatic arrangements for answering calls; Automatic arrangements for recording messages for absent subscribers; Arrangements for recording conversations > Recording arrangements > for recording conversations

CPC:

Substation equipment, e.g. for use by subscribers (subscriber services or facilities provided at exchanges H04M3/00; prepayment telephone coin boxes H04M17/00; current supply arrangements H04M19/08) > Automatic arrangements for answering calls; Automatic arrangements for recording messages for absent subscribers; Arrangements for recording conversations (centralised dictation systems H04M11/10) > Recording arrangements > for recording conversations

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