Used By

Solutions to access, control and services for mobile networks – EPC, IMS.

Open source Linux distribution focused on VoIP and unified communications.

Free SIP service with iNum and UK inbound numbers.

Real time communications solutions and services.

World wide DID market place.

Spanish telephony and unified communications provider.

SIP and Kamailio consultancy, trainings, support and development.

IP Telephony operator based in Athens, Greece.

IP telephony operator and MVNO in Germany.

Local Mail is a cloud-based business phone system that turns conversations into opportunities and helps global teams make smarter calls–anywhere, anytime. We bring simplicity to the professional phone experience and some of the world’s most innovative companies use our platform. Localmail’s products span video meetings, cloud call centers, sales coaching, and dialers, and enterprise phone systems–and are all infused with the latest AI technologies to help every business make smarter calls, Instead of waiting weeks or months for compliance & approvals on budgets, you can instantly deploy new applications, instantly scale up as your workload grows, and pay only based on USAGE.

Free SIP service since early 2000 with option to host personal domain.

IP Telephony operator based in Milano, Italy.

SBC products and SIP consultancy services.

PRIVISIP is a free (as in beer) TLS/SIP service for your endpoint, pbx, or other sip device. Powered by Kamailio.

We offer best VoIP telephony solution to customer by using Kamailio.

OV500 is an open source billing and switching solution developed by the openvoips community managed by Chinna Technologies. The solution is based on Kamailio, RTPProxy and FreeSwitch.

IP telephony operator in Spain.

A mobile communications service – voice, chat, sharing, …

LibreSBC is a open-source Session Border Controller provide robust security, simplified interoperability, advanced session management, high performance, scale of carrier-grade and reliability for voice over IP (VoIP) infrastructures. LibreSBC designed to typically deployed at the network edge, the demarcation points (borders) among networks/environments.

Cloud PBX platform.

Telecom services and systems.

One of the largest IP telephony providers in Germany.

Internet phone service tailored for small businesses and start-ups, also having full REST API for integration with other services.

KAZOO is an open-source, highly scalable software platform designed to provide carrier-grade VoIP switch functions and features. Developers, system administrators, and telecom engineers can build flexible, reliable telecom services using the extensive KAZOO APIs.

Open communications research and prototyping.

Daktela is an omnichannel cloud-based solution for contact centers. We use Kamailio for providing our customers with a robust gateway enabling connections from various locations to our services and for building resilient connections between various telco components.

Large VoIP?telephony provider in Norway and couple of other European countries.

Smile provides 4G LTE mobile broadband services.

Commercial Kamailio support, consultancy, and hosting.

Kamailio lies at the call processing core of CSRP, a high-performance SIP call routing, accounting, rating and LCR solution for SIP trunking providers, hosted PBX…

We offer business phone services in the United States using FreeSwitch and Asterisk, all backed by Kamailio.

US Based VoIP Phone Service Provider focused on Small Business and Enterprise Market, offering SIP trunking services along with hosted PBX solutions.

AfriCallShop is specialized on calls to Africa from the world to make it. We provide high-quality communications and a text messages services at economic prices.

We use Kamailio as to provide the following services: SBC and REGISTRAR.

SipFlare is a VoIP firewall and anti-fraud system, enables the scalability of Telco systems and migration support with intelligent routing engine, available in cloud or on premise.

Global MVNO and VoIP service, one SIM with multiple telephone numbers from different countries.

Spanish telephony provider focused on enterprise market, offering SIP trunking services along with hosted PBX’s

Enswitch is a full-featured multi-tenant softswitch for commercial telephony services such as hosted PBX, residential ITSP, SIP trunking, calling cards and more. It scales to tens of thousands of concurrent calls and hundreds of thousands of users on a full redundant cluster. It includes extensive hosted PBX features, prepaid and postpaid billing, invoicing, a web interface for system administrators, resellers, and customers, and a complete JSON API. It’s in production with carriers around the world, from single machine systems running tens of users to systems with several hundred thousand users. It’s also used by enterprises as a corporate PBX where high scalability and redundancy are required, especially across multiple sites.

Open source platform targeting IP telephony operators, embedding Kamailio, SEMS and Asterisk, packaged with billing system, web interfaces for administrators and subscribers.

Free SIP and WebRTC service – voice, video, instant messaging and presence.

Phonnect is Georgia’s new-generation telecom provider, offering nationwide landline service, PBX solutions, and A2P SMS services for businesses and individuals.

As presented on YouTube (https://www.youtube.com/watch?v=utZHJK5otjI), Airbnb uses Kamailio to help provide 99.999% reliability for a call center with a world wide footprint.

Consultancy, development and trainings for Kamailio, Kazoo and FreeSwitch projects.

Second biggest telephony operator in Germany.

Open source IMS core prototype implementation.