BS 8521:2009
Current
The latest, up-to-date edition.
Specification for dual-tone multi-frequency (DTMF) signalling protocol for social alarm systems
Hardcopy , PDF
English
30-04-2009
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Information transfer
5 Communication
6 Speech path and system control commands
7 Programming
8 Remote access to local unit and controller
(incoming calls)
Bibliography
Describes requirements for the transfer of information and controls within a social alarm system, by means of dual-tone multi-frequency (DTMF) tone signals passing between site control or local equipment and an alarm receiving centre via the public switched telephone network (PSTN) supporting voice traffic conforming to ITU-T Recommendation G.711.
| Committee |
GW/1/12
|
| DevelopmentNote |
Supersedes BS 7369(1991) and 08/30129607 DC. (05/2009)
|
| DocumentType |
Standard
|
| Pages |
30
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| Supersedes |
This British Standard specifies requirements for the transfer of information and controls within a social alarm system, by means of dual‑tone multi‑frequency (DTMF) tone signals passing between site control or local equipment and an alarm receiving centre via the public switched telephone network (PSTN) supporting voice traffic conforming to ITU‑T Recommendation G.711 [1].
The standard specifies an in‑call protocol which supports the 300 ms maximum round trip delay specified in the UK National Transmission Plan [2] for connections over the fixed network.
| TR 102 732 : 1.1.1 | MACHINE-TO-MACHINE COMMUNICATIONS (M2M); USE CASES OF M2M APPLICATIONS FOR EHEALTH |
| ES 201 235-2 : 1.2.1 | SPECIFICATION OF DUAL TONE MULTI-FREQUENCY (DTMF) TRANSMITTERS AND RECEIVERS; PART 2: TRANSMITTERS |
| ES 201 235-1 : 1.1.1 | SPECIFICATION OF DUAL TONE MULTI-FREQUENCY (DTMF) TRANSMITTERS AND RECEIVERS; PART 1: GENERAL |
| ES 201 235-4 : 1.3.1 | ACCESS AND TERMINALS (AT); SPECIFICATION OF DUAL-TONE MULTI-FREQUENCY (DTMF) TRANSMITTERS AND RECEIVERS; PART 4: TRANSMITTERS AND RECEIVERS FOR USE IN TERMINAL EQUIPMENT FOR END-TO-END SIGNALLING |
| BS EN 50134-3:2012 | Alarm systems. Social alarm systems Local unit and controller |
| BS EN 50134-1:2002 | Alarm systems. Social alarm systems System requirements |
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