I've used them as a proxy/redirect to my other lines, and generally I don't like the sound quality to my cellphone. SMS works well enough, at least within the

I've used them as a proxy/redirect to my other lines, and generally I don't like the sound quality to my cellphone. SMS works well enough, at least within the limitations of the SMS system. If my cellphone wasn't already the one number to reach me at, then I'd be more interested.