I'm unsure why any company would tarnish their image with cell phone quality today.
The thing about Primas is simple. They didn't answer your questions, didn't demo their products so you should remove them from your consideration.
Wondering if anyone here has business VoIP attached to their cell phones as well as a land line, and if calls reliably get through to the cell phone. I am starting up a home-based business and VoIP looks like the affordable way to go. Thing is, I'm often not home, and want to be able to take calls on my cell too. I'm leaning towards going with Primus because they have a software I can download on my iphone. Seems simple enough. Has anyone used something like this? Do calls get through reliably? How is the sound quality?
Thanks for your help!