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A reliable, secure
cloud phone system

Business-telephony for modern companies


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Thousands of business partners trust vio:networks daily

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The Cloud-PBX explained in simple words

Advantages of the cloud phone system

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Simple configuration

You simply set up the virtual PBX with your browser. After a few clicks everything is done.

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Save up to 50 % costs

With us applies: no acquisition costs, no minimum contract duration, support and updates are inclusive.

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Take phone numbers with you

Take your telephone numbers with you to us free of charge or order new numbers from your local network.

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Everywhere accessible

With us your office number becomes mobile. Use all the functions of the VoIP telephone system on your smartphone, tablet or laptop, even when mobile.

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Focus on security

You are calling via ISO 27001 certified encrypted data centers in Germany. With a guaranteed availability of 99.9%

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Passionate Support

We're different. We are at your side with words and deeds. And in the same way as we ourselves like to be treated as a customer.

Our telephone system is excellent!

Auszeichnung Snom Silberpartner
Auszeichnung TÜV Geprüftes Rechenzentzum
Auszeichnung Ökostrom
Auszeichnung Cloud Services
Auszeichnung Yealink Partner
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Some amazing people
we've had the pleasure to work with.

  • “We manage all our locations in Berlin and Hamburg online in a central telephone system from vio:networks. This saves us installation effort on site.”

    Andreas Grunszky, CEO,
    BEEFTEA GROUP

  • “As a dynamically growing company, we benefit from a telephone system that scales with us. We were able to start with low costs and are future-proof at the same time.”

    Gregor Bierhals, Head of Product Management, machtfit GmbH

  • “At vio:networks, we are not a number in the system, but are always advised quickly and competently. A telephony provider that doesn’t feel like one.”


    Sepideh Cirak, Senior Projekt Manager inpact europe Verlag GmbH

  • “Safety and reliability are our top priority. That’s why we rely on encrypted telephony via vio:networks’ German data centers.”


    Stephan Brügger,
    Authorised Officer, Plato AG

  • “Not only the switch to vio:networks, but also the setup of the telephone system with the intuitive web interface was surprisingly simple.”


    Andreas Wölfer, CEO,
    D.I.E. Cad und Statik Software GmbH

Modern IP-Telephoning

When telephoning with our cloud telephone system, you have the choice: either use modern desktop and DECT terminals or make flexible calls with software telephones on your computer and smartphone.

The Cloud-PBX from vio:networks

With our cloud telephone system, also known as IP-Centrex or Hosted PBX, you can choose the PBX of the future and benefit from many advantages at the same time. We operate the virtual telephone system for you in our professional data centres in Berlin and Nuremberg. You purchase the Online-PBX as a service from the Internet.

To use the software-based VoIP telephone system (VoIP stands for "Voice-over-IP") you do not need an analogue or ISDN telephone connection, but only DSL Internet access. That saves costs, because the investment in expensive hardware is void. In addition, the IP telephone system grows with the number of your employees, so that you only pay as much as you currently use.

The cloud telephone system also gives you maximum flexibility. You can use the telephone system to make calls from anywhere in the world with various extensions such as VoIP telephones, the computer or mobile with smartphones and tablets. From the basic functions of a telephone system to groups, voice menus and call center functions to modern unified communications our virtual telephone system offers you much more than you are used to from a telephone system.

The telephone system from the cloud is suitable for small and medium-sized enterprises (SMEs) with 3 or more employees as well as for large companies with up to 5000 employees.

Would you like to see our solution for yourself? Then test the cloud telephone system for 14 days free of charge and without obligation.

FAQ about the virtual telephone system

Which phones can we use?

We recommend and support the latest VoIP phones from Yealink and Snom. Both providers offer desktop and cordless phones. Alternatively, you can use apps on your computer or smartphone as extensions.
Learn more.

How long is our contract period?

We bind our customers with good performance, not with long contract periods. Your contract can be cancelled at any time and only with a notice period of 30 days to the end of the month.

Can I make calls from my iPhone/Android?

Yes, all you need is our free app that connects to our PBX as soon as you have WLAN, LTE or 3G reception.

What do we do if we have several locations or home offices?

In this case, you will particularly benefit from the concept of our virtual telephone system! Your telephones can be connected to our telephone system from anywhere. Your employees worldwide use the telephone system as if they were all in the same office.

Can we keep our existing telephone numbers?

Yes, if you have opted for our virtual telephone system, you can take your existing telephone numbers with you. You simply give us a so-called porting order and we take care of the handling together with your old provider.
Details on phone number porting.

Which telephone and Internet connection do we need?

With us you can make phone calls via your Internet connection. You do not need a classic landline telephone connection. The necessary bandwidth of your Internet connection depends on the number of parallel calls. A telephone call in perfect voice quality requires around 100 KB/s download and upload bandwidth.

Sjoerd Girkes
Sjoerd Girkes

Get in touch today for your personal quote or to
start your free trial