British Standards Document
BS 7369
Specification for multi-frequency tone signalling protocol for social alarm systems

https://doi.org/10.3403/00235941U

BS 7369 is maintained by GW/1. The current release of this standard is:

BS 7369:1991 Specification for multi-frequency tone signalling protocol for social alarm systems

https://doi.org/10.3403/00235941 (published 28/02/1991)

This standard is available from the following sources:

Other historical versions of this standard document also exist: