Used By

One of the largest IP telephony providers in Germany.

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

Cloud PBX platform.

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

SBC products and SIP consultancy services.

Open communications research and prototyping.

Real time communications solutions and services.

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 and MVNO in Germany.

Open source Linux distribution focused on VoIP and unified communications.

Spanish telephony and unified communications provider.

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

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

Second biggest telephony operator in Germany.

World wide DID market place.

Telecom services and systems.

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

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

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 best VoIP telephony solution to customer by using Kamailio.

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.

IP Telephony operator based in Milano, Italy.

Open source IMS core prototype implementation.

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

IP telephony operator in Spain.

SIP and Kamailio consultancy, trainings, support and development.

Free SIP service with iNum and UK inbound numbers.

IP Telephony operator based in Athens, Greece.

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

Commercial Kamailio support, consultancy, and hosting.

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.

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

Smile provides 4G LTE mobile broadband services.

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

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

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