BS 8521:2009

Specification for dual-tone multi-frequency (DTMF) signalling protocol for social alarm systems.

STANDARD published on 30.4.2009

The information about the standard:

Designation standards: BS 8521:2009
Publication date standards: 30.4.2009
The number of pages: 30
Approximate weight : 90 g (0.20 lbs)
Country: British technical standard
Category: Technical standards BS