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BS 8521:2009 | British Standards

Standards Shop | ICS 13 |  ICS 13.320

13.320 Alarm and warning systems

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

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

BS 8521:2009

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


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ISBN: 9780580550799

Keywords:
Messages, Control functions, Alarm systems, Information transfer, Telephone signalling equipment, Acoustic signals, Warning devices, Digital signals, Data transmission, Special-purpose alarms, Codes, Telephone networks, PDF
Publication Date30 Apr 2009
Product SKU30129608
ISBN9780580550799
BSI CodeBS 8521:2009
No. of pages30
ReplacesBS 7369:1991
PublisherBritish Standards Institution




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