Centralised arrangements for recording incoming messages

Introduced: January 2000

Full Title

Full titles differ between systems:

IPC:

Automatic or semi-automatic exchanges > Systems providing special services or facilities to subscribers > Centralised arrangements for answering calls; Centralised arrangements for recording messages for absent or busy subscribers > Centralised arrangements for recording incoming messages

CPC:

Automatic or semi-automatic exchanges > Systems providing special services or facilities to subscribers (specially adapted for wireless communication networks H04W4/00) > Centralised arrangements for answering calls; Centralised arrangements for recording messages for absent or busy subscribers (H04M3/487 takes precedence; centralised dictation systems H04M11/10); > Centralised arrangements for recording incoming messages

Of 4 combined children, 2 exist in both systems.

2 codes are CPC-only extensions.

IPC defines codes here since 2000.

Child Classifications

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H04M 3/5307 +1 CPC CPC only CPC only
H04M 3/5322 CPC only CPC only
H04M 3/533 Voice mail systems since 2000 +5 CPC IPC+CPC Available in IPC and CPC
H04M 3/537 Arrangements for indicating the presence of a recorded message since 2000 IPC+CPC Available in IPC and CPC