From: Joshua Whalen on
Why don't you just switch to something like gizmoproject? I've been using it for
over a year now and have nothing but great things to say about them, their tech
support, and the underlying, open-standards based SIP technology. Having
alternative client software that works with your host is a definite advantage
when something comes this way, which, honestly, I haven't had happen so far.

They are here:

http://www.gizmoproject.com/

the program can take quite a while to start. after that, it's awesome.

enjoy!

Joshua