Mobile working Toolkit 
Story: European Commission: Data roaming is next
Roaming at low cost with WiFi
The solution to low cost roaming is already available, just buy a dual SIP WiFi / GSM Handset. Use WiFi hotspots to make and receive calls and only use GSM when you are out of range of a hotspot. Also you can easily download your emails and Video services to your handset via a hotspot (note: T-mobile have stated they will ban you from using VoIP over their hotspots - so switch to another GSM provider to teach them a lesson).
In addition if you buy an account with an IP PBX Services supplier, you can call all your mates from all over the world for FREE if they are ON-NET.
As to choice of Handset, take a look at the Mazingo Voyager SIP WiFi / GSM Handset at www.mazingophones.com. Mazingo also offer an IP PBX service from €6.95 a month.
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