
22-01-2009, 18:04
You definitely have a lot of possibilities.
First, if you get a local sim in Europe, the incoming calls will be free in the home country, but the standard incoming roaming tarif in EU countries is 0.26 EUR/min. Some providers may provide cheaper incoming rates or even for free, for example, the 3 at home offers.
On the other hand, the international sims offer free incoming in a lot of countries. For your type of scenario, I would select an international sim with an UK number, since they are the cheapest to reach via a VoIP provider, especially the Betamax clones. Keep in mind the conditions of the sim provider, like connection fee, expiry of the data, other fees.
To avoid the data roaming to initiate the callback, I would get a free DID from some country. You call the DID, the server hangs up the connection and calls you back.
Keep in mind, all local and internation sims are considered mobile numbers from the point of view of the VoIP provider.
Some international sims offere non-mobile DID, but then the incoming calls are never free.
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