AddSecure calls for regular reassessment of alarm signalling grades
AddSecure urges installers to review EN 50136 compliance and alarm signalling grades during the migration from PSTN networks.

As the threat landscape evolves, AddSecure is advising industry professionals to verify that alarm signalling grades remain aligned with current risk profiles. While the core requirements of the EN 50136 standard remain unchanged, the transition away from PSTN infrastructure provides a critical juncture to reassess whether existing systems still meet site security and insurance obligations.
Grading under EN 50136 depends on path redundancy, supervision, and tamper resistance. While single-path IP signalling often satisfies requirements for standard commercial sites, high-risk premises or specific insurer mandates frequently necessitate dual-path configurations—such as a combination of Ethernet and mobile data. Failure to update these specifications can result in compliance gaps or unnecessary operational costs.
AddSecure emphasizes that installers should integrate a formal grading review into their standard site survey process. By aligning equipment choices with both current site risks and specific alarm receiving centre (ARC) requirements, installers can ensure systems remain robust without over-specifying, thereby addressing potential liabilities before they emerge.