By Sagar Shankaran, Founder of CallSphere
What direct 911 dialing and dispatchable location requirements mean for AI receptionists running on multi-line telephone systems, and the configuration that satisfies the FCC.
Key takeaways
An AI receptionist sits in front of an MLTS by definition. If the caller dials 911 from the office and the call routes through your AI first, you may have just blocked a 911 call. Kari's Law and RAY BAUM say you cannot, and the FCC has been enforcing both since 2020 and 2021 respectively.
flowchart LR
UA[SIP UA] -- REGISTER --> Reg[Registrar]
UA -- INVITE --> Proxy[SIP Proxy]
Proxy --> Dispatcher[Kamailio dispatcher]
Dispatcher --> Worker1[FreeSWITCH worker]
Dispatcher --> Worker2[FreeSWITCH worker]
Worker1 --> AI[(AI agent)]
Worker2 --> AIKari's Law (Pub. L. 115-127, codified at 47 U.S.C. § 623), effective for MLTS manufactured, imported, sold, leased, or installed after February 16, 2020, requires multi-line telephone systems to enable direct 911 dialing without prefix or access code, and to send a notification (audible or visual) to a central on-site or off-site location when 911 is dialed. Section 506 of the RAY BAUM'S Act (Pub. L. 115-141), implemented by FCC rules effective January 6, 2021 (fixed) and January 6, 2022 (non-fixed/dispersed), requires that 911 calls from MLTS automatically convey a "dispatchable location" to the public safety answering point: street address, building, floor, suite, room, or other useful detail. The FCC's MLTS rules apply to enterprise systems serving office buildings, hotels, schools, and increasingly cloud-hosted PBX or AI-receptionist platforms that act as the front door.
Three things matter for AI receptionists in 2026:
First, an AI receptionist must let 911 through, immediately and unconditionally. If a caller's first utterance is "I need 911" or the caller dials 911 from an internal extension, your routing must skip the AI and connect to PSAP. The FCC has not formally enforced against AI receptionists yet, but the underlying legal duty applies the moment your system is the MLTS.
Hear it before you finish reading
Talk to a live CallSphere AI voice agent in your browser — 60 seconds, no signup.
Second, dispatchable location must travel with the call. For office deployments, this typically means each extension has a registered location (street address + suite/floor) in your carrier's e911 database, and the call carries the right ELIN (Emergency Location Identification Number) so the PSAP gets the precise address.
Third, notifications must fire when 911 is dialed. Kari's Law requires a notification (email, SMS, dashboard alert, console light) to a central location so on-site staff know help has been called and can guide first responders to the exact spot.
For AI voice agents specifically, the standard pattern is: detect 911 intent or dialed digits in the first 200ms, bypass the AI, hand the call directly to the trunk for PSAP routing with the appropriate ELIN, and fire a notification webhook to the customer's emergency contact.
CallSphere's voice routing layer detects 911 dial patterns and emergency-intent utterances ("call 911", "this is an emergency") at the front door. When detected, the AI receptionist immediately bridges the call to the carrier's PSAP routing using Twilio's Emergency API, attaches the registered ELIN for the caller's location, and fires a notification webhook to the customer's emergency contacts (configurable: email, SMS, Slack, PagerDuty). Healthcare AI deployments add a HIPAA-scoped audit log: every 911 event is logged with timestamp, caller line, location ELIN, notification confirmation. The platform supports multi-location customers (e.g., a Salon AI deployment across 3 locations) with per-location ELINs. Across 50+ businesses, 4.8/5 rating, and the 14-day trial, e911 setup is a one-time onboarding step with quarterly re-verification.
Does Kari's Law apply to a single-line AI receptionist? Kari's Law specifically governs MLTS. A single-line consumer AI does not trigger MLTS rules; an enterprise deployment with extensions does.
Still reading? Stop comparing — try CallSphere live.
CallSphere ships complete AI voice agents per industry — 14 tools for healthcare, 10 agents for real estate, 4 specialists for salons. See how it actually handles a call before you book a demo.
Can the AI ask "is this an emergency?" before connecting? Best practice: do not. Detect, bridge, and notify. Asking first adds latency that can cost lives and exposes you to liability.
What is an ELIN? Emergency Location Identification Number. A telephone number associated with a specific dispatchable location that PSAPs query to retrieve the address.
What if a remote worker moves? They must update their registered location in the e911 system. Most platforms (including CallSphere) prompt at login if the IP geolocation suggests a different location than registered.
What are the penalties? FCC enforcement actions for MLTS violations have run into the hundreds of thousands of dollars; the more serious risk is wrongful-death liability if an emergency call fails.
Start a 14-day trial, see pricing, or visit /industries/healthcare.
Written by
Sagar Shankaran· Founder, CallSphere
Sagar Shankaran is the founder of CallSphere, where he builds production AI voice and chat agents deployed across healthcare, hospitality, real estate, and home services. He writes about agentic AI, LLM engineering, and shipping voice agents that handle real calls in production.
See how AI voice agents work for your industry. Live demo available -- no signup required.
Avoid costly TCPA violations with this 2026 compliance guide covering prior express consent, DNC rules, ATDS definitions, and enforcement trends.
E911 is not optional. Kari's Law mandates direct 911 dialing on multi-line systems; Ray Baum's Act mandates dispatchable location. Both apply to AI voice deployments. FCC fines run $10k per day. Here is what to register and how.
Provisioning is easy; releasing a number cleanly is hard. The FCC mandates a 45-day aging period before reassignment, and orphaned numbers are a top cause of customer complaints in 2026. Here is the full lifecycle and the operational guardrails.
The FCC's 2026 RMD overhaul mandates annual recertification, $10K base fines for inaccurate filings, and Google Authenticator MFA. Here is the compliance checklist for AI voice providers.
The February 2024 FCC ruling made AI-generated voice calls 'artificial' under the TCPA. The September 2024 NPRM proposes mandatory AI disclosure. Here is the 2026 state of play and what your agent must say.
FCC's 2024 TCPA ruling plus 2026 NPRM proposals require clear AI disclosure within the opening of every call. We compare 7 disclosure phrasings, cover the 2-second opt-out rule, and ship CallSphere's compliant template.
© 2026 CallSphere LLC. All rights reserved.