I am expecting VOIPo to Reseller, Reseller to VOIPo, and Reseller to Reseller will all route over the web and be free. It seems to work that way when they play nice.

I have some accounts that go straight to Voice Mail calling VOIPo, but go through fine if sent there as a SIP call. That is one oddity, that does not seem to have an answer.

Also, I believe outbound calls to Toll Free would be free too.