Global IP Solutions releases VoIP for iPhone, AT&T not happy

We all know how AT&T maintains a stronghold in the field of mobile telephony. This they confirmed when they teamed up with iPhone. Hoever, AT&T doesn’t seem to like tethering and technologies and applications, which lets you make cheap or even free phone calls. Now that may be quite understandable as VoIP is another prohibited application for AT&T. Now, Global IP Solutions may release a VoIP