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As someone who builds and operating a very large simulcast paging network for emergency services I can assure you POCSAG is not completely legacy ;-) very much
by nineteen999 10mo ago
As someone who builds and operating a very large simulcast paging network for emergency services I can assure you POCSAG is not completely legacy ;-) very much alive and well in 2025.
Definitely old but highly reliable.
- bflesch 10mo agoInhowfar were you able to harden such a legacy protocol against state-actor attacks on critical infrastructure? Is it a legacy protocol in the sense of simple & robust or spoofable & floodable? Edit: To clarify, if the frequency is known couldn't they simply disable/jam all devices?
- nineteen999 10mo agoThe area covered in question is over 200km2. Might be hard to imagine how much RF transmission/reception equipment we have in that space. An attacker would need a lot of fairly powerful jamming equipment just to disrupt a small area of it. And our customer would advise us pretty quickly if their personnel were having reception issues and our field engineers would diagnose the source of the interference pretty quickly. So no.
- bflesch 10mo agoThanks for elaborating. Is there an extension to the protocol so it frequency hops once jammed?