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Yes this can be activated through E66 internet phone option, what u need WiFi connection and proxy server address of Active Voice.
Dont install fring the voice quality will not be good, it will make your phone slower and also not user friendly.
i dontknow actionvoip will success woth fring if you succes please inform us howdid u do but aother voip are ok
dowload Fring from the below mentioned website.
I think you need the software called FRINGE to use Actionvoip through your mobile. You can donwload it from internet.