911 rules for business phone systems
Kari’s Law and RAY BAUM’S Act generally require direct 911 dialing and a usable location on covered business phone systems.
What do the 911 rules require?
Two US federal rules shape how business phone systems handle 911. Kari’s Law generally requires that anyone can dial 911 directly, with no 9 or other prefix first, and that a notification goes out when they do. Section 506 of RAY BAUM’S Act generally requires that a usable location travels with the call. Both are written around multi-line telephone systems, and both have limits on which systems they reach.
| Rule | What it requires | Why it exists |
|---|---|---|
| Kari’s Law — direct dialing | A covered system is configured so 911 works without dialing 9 or any other prefix first | A child could not reach 911 from a motel room because the system required a 9 first |
| Kari’s Law — notification | A notification goes to a central point at the facility, or to another person or organization, somewhere a person is likely to see or hear it. This applies where the system can do it without a hardware or software upgrade | So someone can unlock doors and meet responders at the entrance |
| RAY BAUM’S Act — dispatchable location | A validated street address travels with the call, plus detail such as floor, suite or room where it is needed to find the caller | A street address alone is not enough in a large or multi-floor building |
| RAY BAUM’S Act — non-fixed and off-premises devices | Location information for softphones and for staff calling from home or elsewhere on the system, automated where technically feasible and otherwise manually set or best-available | Remote and roaming users would otherwise appear at the office |
Who these rules apply to
Broadly, they cover multi-line telephone systems — the kind almost every office, hotel, school and clinic has. The rules are forward-looking rather than retroactive: Kari’s Law is generally written to reach systems manufactured, imported, offered for first sale or lease, first sold or leased, or installed after February 16, 2020, so an older system that has simply been left alone is not automatically pulled into scope. The dispatchable location requirements phased in on January 6, 2021 for fixed on-premises phones and January 6, 2022 for non-fixed on-premises devices and off-premises devices. Both dates have passed, so both requirements apply now to systems in scope.
Being out of federal scope is not the same as being safe. A number of states have their own 911 rules for business phone systems, and some go further than the federal ones. Whether your specific system and sites are covered, and what you have to do about it, is a question for your provider and your own legal advisor.
What dispatchable location means in practice
- A validated street address, not a billing address or a head-office address
- Additional detail where a building needs it: floor, suite, wing, room
- A location held per phone or per user, not one address for the whole company
- A way for staff working from home to set their own address, and a prompt to update it when they move
- A record that stays current — location data goes stale the moment someone changes desks
A practical checklist
Dial 911 the way a visitor would
From a desk phone, with no prefix. If it needs a 9, that is the first thing to fix.
Confirm the notification works
Reception, security or a shared mailbox should be alerted the moment 911 is dialed.
Check the address on every phone
Not just the main number. Each phone should carry the location it actually sits in.
Add floor and suite detail for larger sites
Anywhere responders could lose minutes finding the right door.
Handle the remote staff
Anyone on the system away from the office needs their own address on file and a way to change it.
Re-test after any change
A move, a new floor, a new site, a system upgrade. Each one is a fresh test.
Things that quietly break it
- An old dial plan that still requires a 9 for an outside line
- A soft phone on a laptop that travels while its registered address does not
- A new site added to an existing system and never given its own address
- Staff who moved desks or floors after the addresses were set
- A branch office routed through a head-office connection, so its calls present the wrong city
Where responsibility sits
Providers supply the routing and the tools to store location data, but the obligations generally fall on the operator of the system — you. What your provider handles and what you must maintain is set out in the service agreement you sign with them. Read that part carefully, and confirm your own obligations with a qualified advisor.
Last reviewed September 13, 2026
