Hello pasnous and welcome to Voipuser
Short answer - probably not, without a great deal of work and there is really no need to anyway.
Voipwise is just another Betamax/Finarea clone. Their USP seems to be based on the concept that there are some folks who only want to use a soft phone and who are we to argue.
If you want to use any other connection method then use up your credit and swap to almost any other of the Finarea products*, Any of them will allow you to 'Bring Your Own Device' and will provide setup info accordingly. Best source of info is probably the 'Voipbuster' forum at its respective .com location.
If you need a cost comparison between Voipwise, and all their associated products then there is a useful chart here ...
http://backsla.sh/betamax
* or almost any other VOISP for that matter