who are we ?

We make telephony a calculable quantity! There has been a change in telephony in recent years. More and more functions and services. With us you get the solution as a complete package. A cloud telephone system, compatible with all common SIP devices, any number of trunks, all functions included. And all at a fixed price including a flat rate. Together with BISG e.V. (Federal Association of IT Experts and Experts) we have developed the following VoIP checklist. The most frequently asked questions about VoIP and migration are answered here.

Voip-Ceckklist (PDF)

What makes TEFONIX different? We provide you with a pricing model that cannot be surpassed in terms of simplicity. A telephone system at a fixed price!

Or you can simply use our modules: letter online, SMS, callback, SIP trunk... without a basic fee or fixed costs. Simply top up your credit and use it without any time limit.

free registration...