Hi Martin,
With one ore more registered SIP accounts it's unfortunattly not that easy because you first must unregister, change proxy and then reregister the SIP accounts. After issue resolved the same way back.
This takes quite some time especially when managing multiple account for relatives...
Is it possible for you to provide us with some kind of easy "proxy switcher" function to help us out here?
I think many Voxalot users would appreciate this!
Regards, Léon