How can Ooma do this? Are Ooma costs fully covered by 25% of customers who purchase the premium subscription fees?
http://www.sfgate.com/cgi-bin/article.c ... 15SEF3.DTL
And this one:
Also it's free for the life of the device. Assuming enough people upgrade to new models every few years there's income from those sales.
Like Telos, which I might get when it comes out.