• BS 8521:2009

BS 8521:2009

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

BSI Group , 04/30/2009

Publisher: BS

File Format: PDF

$132.00$264.16


Cross References:BS EN 50134-1BS EN 50134-3ES 201 235-1 ES 201 235-2ES 201 235-4ITU-T Recommendation G.711:1988

BS 8521:2009 History

BS 8521:2009

BS 8521:2009

$132.00 $264.16

BS 7369:1991

BS 7369:1991

$95.00 $190.50

More BS Standards PDF

BS PD 6605-2:1998

BS PD 6605-2:1998

$199.00 $398.78

BS 6057-1.1:1998

BS 6057-1.1:1998

$80.00 $160.02

BS 6835-1:1998

BS 6835-1:1998

$132.00 $264.16

BS 7371-8:1998

BS 7371-8:1998

$80.00 $160.02