Zvoni.cz - VoIP. Cheap calls all over the world. Prague. Czech Republic Your account in the system. russian english czech
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Phone services. IP-telephony - it is very easy. Dont be afraid of it. You are not adhered to a telephone line and to the certain address. Simply connect your IP-phone to the Internet where you are. And then Immediately you can calling and accept calls.
international calling prices
Prague telephone number registration
Cards/To buy With Greg I-Call card you can have access to cheap international callc from any usual or mobile phone... There are many softphones with that you can use GregPhone network, FireFly or SJPhone for example... IP-adapter, or IP-telephone is a hardware devices to use all possibilities of the GrerPhone network...
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With Greg I-Call card you can have access to cheap international calls from any proper phone or taxofone...
  There are many softphones with that you can use GregPhone network, FireFly or SJPhone for example...
  IP-adapter, or IP-telephone is a hardware devices to use all possibilities of the GregPhone network...
Additional services
contacts, e-mail
With Greg I-Call card you can have access to cheap international callc from any usual or mobile phone... There are many softphones with that you can use GregPhone network, FireFly or SJPhone for example... IP-adapter, or IP-telephone is a hardware devices to use all possibilities of the GrerPhone network...

Calling from computer to telephone...

GregPhone services based on the VoIP (Voice over IP) technology and SIP protocol. Supported codecs: G711a, G711u, G729a, G726, G723. Customer’s equipment must have SIP protocol supported and connected to GregPhone PBX over internet.

There are many different softohones with that you can use GregPhone network, X-Lite or SJPhone like example.
The only one condition is SIP protocol supported.
After you have installed the softphone into the computer connected to internet, you can setup it to connect to GregPhone network – and then you can make calls and receive calls with headphones and microphone. Of course, it is possible only if your computer is connected to internet.
In this case you don’t need any additional equipment.

More information about connection to GregPhone network you can find here.