Alarm systems - Part 7-11: Message formats and protocols for serial data interfaces in alarm transmission systems - Serial protocol for use by digital communicator systems using ITU-T Recommandation V.23 signalling at interfaces with the PSTN
Specifies the requirements for standard interfaces between the Public Switched Telephone Network (PSTN) and alarm system transceivers. Specifies a 1 200 baud interface using ITU-T Recommendation V.23.
Life cycle
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PUBLISHED SSH IEC 60839-7-11:2001 60.60
Standard published Jan 12, 2015