E911 VoIP service: Stay compliant and connected

With over 240 million 911 calls placed each year in the U.S., and nearly 80% now coming from wireless or VoIP devices, emergency calling has always been a non-negotiable feature of voice communication. However, as businesses transition to cloud-based and internet-powered telephony, ensuring that VoIP calls reach the correct emergency responders—with accurate location information—has become increasingly complex.

An E911 VoIP service solves this problem by combining VoIP flexibility with location-aware 911 compliance. It enables organizations to route emergency calls correctly while maintaining up-to-date address records for dynamic work environments.

This post explains how E911 works in VoIP systems, why it’s essential for compliance and operational resilience, and how Telnyx makes it simple to deploy at scale.

What is an E911 VoIP service?

An E911 VoIP service is a cloud-based voice platform that routes 911 calls to the nearest public safety answering point (PSAP) and provides the caller’s physical location, even in a mobile, IP-based, environment. Unlike traditional 911, which is tied to fixed landlines, VoIP allows users to connect from anywhere: their home, office, or even a hotel room. E911 ensures emergency responders receive accurate location information so they know exactly where to go.

A compliant E911 VoIP service enables businesses to register, validate, and update location data for every endpoint in real-time, supporting mobile workforces while meeting U.S. regulations. It handles dynamic location management, emergency call routing, and integration with public safety systems, and is built for flexibility and scale.

Why E911 is critical for VoIP deployments

E911 is a legal requirement, but it’s also a critical safeguard for protecting employees, customers, and visitors across modern, mobile workplaces. A reliable E911 VoIP service ensures emergency calls are routed accurately and location data is delivered in real time, regardless of where users are calling from.

Regulatory drivers: Kari’s Law and Ray Baum’s Act

In the U.S., two federal regulations define how VoIP systems must support emergency services.

Kari’s Law requires that users can dial 911 directly—without dialing “9” or other prefixes—and that someone on-site is notified when a call is made. This ensures no technical barriers delay help and that someone local can assist responders.

Telnyx supports Kari’s Law compliance by enabling direct dialing and customizable on-site notifications via its Voice API and Mission Control Portal.

Ray Baum’s Act mandates that emergency calls include a dispatchable location—such as floor, suite, or room number—so first responders can locate the caller quickly, especially in large or multi-tenant buildings.

Telnyx helps meet this requirement by allowing organizations to assign detailed location data to each endpoint and update it dynamically.

Risks of non-compliance

Failure to comply with these laws can lead to serious consequences—including FCC fines that may reach tens of thousands of dollars per violation. More importantly, inaccurate or missing location data can delay emergency response and endanger lives.

Complexity in modern work environments

Compliance becomes more challenging as teams become increasingly mobile. Hybrid work, hot-desking, and large-scale SIP deployments make it nearly impossible to maintain accurate static address records.

Without purpose-built tools, IT teams would have to manually update physical addresses every time an employee switches desks or signs on remotely.

Telnyx solves this by offering dynamic address registration via API and portal, so location data stays current no matter where users connect.

Use cases for E911 in modern VoIP environments

These are some of the most common scenarios where a reliable E911 VoIP service makes a measurable difference in ensuring safety and compliance.

No matter the size or complexity of your deployment, an E911 VoIP service provides you with the tools to maintain accurate location data, route calls correctly, and protect your personnel in every situation.

Setting up E911 with Telnyx

Telnyx makes E911 compliance simple by integrating address management and emergency call routing directly into its Voice API and SIP trunking products. Everything is built in, eliminating the need for third-party add-ons or complex manual processes.

1. Log into the Mission Control Portal
   Start by signing into the Mission Control Portal, Telnyx’s centralized platform for managing numbers, addresses, and call routing.
2. Navigate to the E911 section
   In the portal, go to the E911 section. Here, you can assign a validated physical address to each phone number in just a few clicks.
3. Register and validate addresses
   Use the portal interface or Telnyx API to register address data for every VoIP endpoint. You can also programmatically validate addresses as users move or endpoints change.
4. Automate address updates (optional)
   For dynamic environments, such as remote teams or hot-desking offices, use the API to automate address management and keep location data up to date without manual intervention.
5. Route emergency calls over Telnyx’s private network
   Once addresses are assigned, Telnyx automatically routes 911 calls through its private, low-latency network, ensuring reliable delivery and FCC compliance out of the box.

This seamless setup helps IT and compliance teams maintain accurate records, reduce risk, and ensure emergency responders always have the right information.

Telnyx for E911 VoIP

Telnyx makes E911 simple and scalable. With dynamic location management through both the portal and API, and real-time routing to PSAPs over our private global network, Telnyx gives you full control over emergency address management and compliance.

Our Voice API and SIP Trunking services are designed for modern, distributed workplaces, and our comprehensive documentation makes it easy to deploy and manage at scale.

When every second counts, Telnyx keeps you compliant and connected.