What is E911?

E911 is enhanced emergency calling that delivers a caller's location to dispatchers automatically — with legal requirements (Kari's Law, RAY BAUM'S Act).

E911 (Enhanced 911) delivers a caller’s callback number and location to emergency dispatch automatically. With VoIP, location isn’t implicit — the system must be told where each user actually is, which is why federal law now regulates it.

Kari’s Law requires multi-line phone systems to dial 911 without a prefix (no “9 first”) and notify a front desk/security on any 911 call. RAY BAUM’S Act requires dispatchable location — building, floor, room — transmitted with the call, including for remote workers.

Buying context

Any VoIP provider worth shortlisting supports E911 location management; the differentiators are dynamic location (user moves, location follows — important for mobile staff), on-site alerting, and the vendor’s help mapping multi-floor sites. Microsoft Teams phone migrations in particular live or die on E911 planning — specialists like UniVoIP build their service around it.

Related terms:
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