Network Traversal

International Network Traversal Service
Fast and reliable, low-cost, STUN and TURN capabilities over five continents.

From day one, our vision has been to remove communication barriers so that any business or individual may communicate regardless of time, distance, and device. FONE API Communications Solutions is a communication platform that provides Application Programming Interfaces, or APIs, for text messaging, voice, video, and authentication. Our APIs handle the complex task of building and maintaining multifaceted communication frameworks to enable businesses and developers to focus on adding value and creating consumer-friendly applications.

Over the years, we have successfully developed a cloud-based communications platform that allows modern businesses to communicate competitively through all relevant channels with easy-to-integrate SDKs. Our services enable businesses to increase their reach, establish their brand, and expand by using advanced digital communication channels to deliver a combination of smart and tactical solutions that communicate with target audiences with the right message, using the ideal channel, at the right moment. We have worked with major clients including WA Waldorf Astoria Hotels & Resorts, Citibank, 7eleven, P.F. CHANG’S, Fortune 500 companies, and more.

Ready to get more from your communications solutions? Contact us and discover the easiest way to connect with people around the world.

Gather Public IP Information

FONE API STUN servers give information to the devices behind the NAT on what port and public IP as it appears to the rest of the world.

Public IP Returned & Relay Option Assigned

FONE API confirms how the devices LAN NAT has translated the private IP of a device and will also issue a public IP and TURN media relay option to be used in case it is needed.

Direct Connectivity Test

IP/port are shared by devices to attempt direct streaming over SDP. The far end device initiates a connectivity test to that IP to check if a peer-to-peer connection is possible.

Successful Peer-to-Peer Connection

A session is established with direct media if devices are able to contact each other through the candidate STUN.

TURN Relay Connection

Media relays through the geographically nearest relay point if devices are not able to connect due to some issues. The SDP negotiates the use of TURN media relay IP to do this.

Nat Traversal

Focus building your app rather than building a global media relay framework to get around firewalls with the use of FONE API infrastructure.


Global, Scalable STUN

85% of the time, all you need to get your media to flow directly is STUN (Session Traversal Utilities for NAT) - the first step in negotiating the connection between two WebRTC. It provides free lookups for unlimited reliable STUN, giving you free peer-to-peer calls.

TURN Media Relay

FONE API provides you with a TURN (Traversal Using Relay NAT) whenever media cannot be routed peer-to-peer. This ensures that your media will be routed through symmetric NATs and firewalls.

Optimized Latency

GEO-DNS resolution ensures that your media is always routed without any latency through the relay points in 8 different regions around the globe.

Standards Compliant

Complies to RFCs, 5389, 5769, 5780, 5766, 6062, 6156, 5245, 5768, 6336, 6544, 5928 over UDP, TCP, TLS, and DTLS.

Cost Effective

FONE API gives you free use of STUN and pay-as-you-go pricing, and TURN is metered by bandwidth usage making it cheaper than operating your own.

Built for Multi-Tenancy

Meter your usage by the customer, using different apps to get usage logs, threshold alerts, and billing records by using sub accounts.

Easy Management

Dashboards of your usage that you can view in real-time.

Usage Logs

Export & see historical sub account usage logs.

Flexible Scale

Demand a scale with no traffic limit and concurrency.

Developers That Can Take Advantage of Network Traversal Science

In developing real-time communications, whether you're using WebRTC, softphones, or building your own stack, here's how FONE API aids in building a better service, faster.

WebRTC Developers

Get the most efficient firewall traversal in the world! Just provide your auth. token and the URL to the FONE API service in your UServers array. That’s truly all it takes, leaving you time to focus on building your app rather than struggle with infrastructure.

Mobile Comms Developers

Whether you're building a media engine on the WebRTC code or your mobile communication app, Network Traversal Services helps you gain the experience to go global in a short period of time.

Service Providers

FONE API ensures that users get the lowest latency if they prefer to roam internationally, without having to build new infrastructures.

Unified Communications

With one-click voice and video calling, screen sharing, and more, unified communication (UC) deployment offers greater productivity to employees globally. Network Traversal Service gives a great experience to all your employees, wherever they may be located.

Get Started Today
Global reach, simple pricing, flexible scaling, Free STUN, Better Communication.
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