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
Buy a printed copy from us with a 10% discount, or follow the link to purchase a PDF on the BSI website.
BSI Price (PDF/Printed): £208.00
Our Price (Printed only): £187.20
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 Date | 30 Apr 2009 |
|---|
| Product SKU | 30129608 |
|---|
| ISBN | 9780580550799 |
|---|
| BSI Code | BS 8521:2009 |
|---|
| No. of pages | 30 |
|---|
| Replaces | BS 7369:1991 |
|---|
| Publisher | British Standards Institution |
|---|
