The technology of the initial Alert Retrieval Cache is simple enough, though it must be customized to every area where it is installed - laws, regulations and simple infrastructure are key.
Asterisk was the keystone of the project, initially, and some scripts written in Perl (if I recall correctly) or Python. Any scripting language would do, really, just as any telephony software/hardware would work.
That combined with a content management system is all you really need. Read more »