how are voip phone calls routed on the internet?

[eisnerp]

Hi all!
I was wondering if you could please kindly explain to me how are voip phone calls routed on the internet? do you need a new number or do you just use your existing number in Germany? can you make voip calls abroad?
I am thinking of buying fritz box fon to be able to call germany.
Having read through fritz manual i could not find an answer to this question.
Thank you in advance for your kind answer.
peter eisner :roll:

 

[Gast]

Hello Peter,
you need some provider for exemple where you get special numbers which you can call via internet !
For exemple: you take sipgate as your provider,which use the SIP protocol,where you will get an internal number and a landline (normal) one,so that you are reached from internet and from outside with nomal phones!
Fritz Box Fon is really a good solution,because you have many features,you are able to call via internet and normal lines and you can configure your box for 10 providers!
Best regards,
Tom