VoIP providers

Since I received my IP04 from Rowetel, I've wanted to connect my telephony system to the real world. Consequently, I've spent some time researching VoIP providers, looking for good inbound and outbound rates in my target areacode. It looks like I might have found one.

My IP04 sits behind my firewall (a Linux system that runs my ADSL connection to the internet), and provides VoIP access to (up to) four regular telephones. Because it sits behind a firewall, I want my VoIP provider to support the IAX2 protocol (SIP would require me to "poke holes" in the firewall where I don't want to poke holes). I'm also looking for a low-cost provider that can give me a DID within my areacode.

I've looked at a number of providers, and they all seem to want $0.01 per minute for outbound calls, and upwards of $10.00 per month for "unlimited" inbound calling.

But, then someone mentioned VoIP.MS. They appear to want only $5.00 per month for "unlimited" incoming calls, and $0.005 (half a cent) per minute for outbound calls. And, they support IAX2.

This looks like the best deal I could ever get.