• We design, develop, deploy and maintain OpenSIPS and Kamailio platforms

    Our focus is on OpenSIPS and Kamailio at the edge and the back-bone of the VoIP infrastructure
    Send your inquiries to office@voipdevs.com or use the Contact Us form

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12+ years of SIP, OpenSIPS and Kamailio experience

Our team focuses on building OpenSIPS and Kamailio based solutions, and can help at any stage of your platform's development.

Whether you require support in building the best platform architecture for your needs, to getting OpenSIPS or Kamailio consultancy in building your platform, to making custom OpenSIPS development to fit your platform design and finishing with offering OpenSIPS support ( or Kamailio support ) for your deployed platform, our team has got you covered.

Experience across all types of SIP Platforms

Since OpenSIPS and Kamailio are such a versatile, scalable and programmable SIP servers, they can fit perfectly in many places in your SIP architecture.

OpenSIPS and Kamailio can sit at the edge of your SIP network, acting as a standard SBC or Load Balancer.

Also, OpenSIPS and Kamailio are perfect matches  at the core of your VoIP infrastructure.  If you are operating Class 4 type services ( eg. Trunking ) or Class 5 ( eg. PBX ) or if you are simply operating a SIP-based service ( eg. LRN, CNAME, STIR/SHAKEN ), our team has the knowledge and skills to get it done.

With great WEBRTC support, OpenSIPS can work excellently as an WEBRTC gateway allowing for your WEBRTC devices to talk between each other, but also with non-WEBRTC compliant devices.

Furthermore, OpenSIPS and Kamailio can help build various advanced SIP scenarios, like a SIP Dialer Engine , a SIP Call Recording System or a SIP Rating Engine system ( prepaid or postpaid ).

With excellent High-Availability and Clustering support, OpenSIPS and Kamailio are excellent tools for building geo-distributed SIP platforms

We believe in free software


Best SIP Proxy, offering an unmatched combination of speed and customization.


A high-performance media proxy which supports all types of network topologies.


Asterisk powers IP PBX type systems and it provides full Class 5 capabilities to any VoIP infrastructure.


FreeSWITCH is a scalable telephony platform usually used as an alternative to Asterisk


A new gen media proxy supporting ICE & Transcoding


Usually deployed in the Percona or MariaDB flavours, for more clustering capabilties.

SIP Platform Development

Our team has 12+ years experience in the VoIP area, especially focused on using OpenSIPS and/or Kamailio in building the back-bone of the SIP infrastructure.

Working in close contact with you, our team can help you build the SIP platform of your dreams, from the ground up.

Since we are only working with open-source tools, we offer full customization at every level of the platform. Furthermore, there is no limit that we enforce in terms of active users / channels.

SIP and OpenSIPS Consultancy

Whether you require help in the designing and integration of your OpenSIPS / Kamailio based platform or if you are interested in further developing certain areas of your systems ( like OpenSIPS / Kamailio security or performance ) our team is ready to help.

Any enhancement that you are thinking about bringing to your SIP platform can be discussed, integrated & implemented using the proper tools.

SIP and OpenSIPS Support

Our team can manage the support for your OpenSIPS and Kamailio based solution so you can focus on growing your business.

With extensive SIP and VoIP know-how, we can offer fast and high-quality support so that any occurring issues are contained, mitigated and addressed as soon as possible.

Custom Development in OpenSIPS and Kamailio

Custom solutions often require custom code development, in order to offer the best possible solution.

With extensive C and OpenSIPS development knowledge, our team can offer stable and fast integration of new features to the OpenSIPS and/or Kamailio source code.