Update:
Greg Dupertuis an engineer from magicTalk just accidentally called my magicTalk number trying to reach Rich Tehani. I didn't know who was calling me, but took the call anyway. After introductions, we talked ab it about magicTalk. Apparently, you need * in front and rear of the magicTalk number. They did this to clearly indicate these are not real PSTN numbers. I spoke to Greg for a couple of minutes and the sound quality was 100% spot on. Excellent quality with no jitter or latency at all. Wow!
So instead, he called my DID number to my deskphone and we talked for about 5 minutes from his MagicTalk softphone app to my PSTN connection. Call quality was excellent, though there were periodic periods when I couldn't hear him. Though he was messing with his headset, so could have been that. Overall though, the sound quality was excellent. magicTalk will mirror magicJack's goal of low-cost PSTN termination, but without the need for the USB dongle required by magicJack- it's 100% software. In fact, in some ways magicTalk is better than magicJack since it offers FREE termination to U.S. numbers with no up-front costs. magicJack on the other hand requires a $39.99 upfront fee then you get free U.S. calling.
Here's a screenshot of the magicTalk app, which I believe is a SIP app with the SIP credentials hidden. Might have to crack open Wireshark and see if I can grab the credentials! If I can, then I can use ANY SIP device or app and make free U.S. calls. Now that would be sweet! :
Now if only magicTalk had an Android and iPhone app, then life would be A-OK!
You can read Rich's full article with more details here.