WolvesOfTheNight wrote:What other options are out there? So far I have considered Google voice, Vonage, and a SIP client. Any other ideas? I really want to be able to call to and receive from U.S. PSTN phones at minimal cost...
I've had good experiences with Sipgate in the UK and US. The service is good but SIP softphones can be poor and configuring hardphones can sometimes be painful. It is, however, a one off exercise.
I'd recommend sipgate with the linphone software. Once linphone is configured I find the quality is as good as my hardphone. X-Ten (or whatever it's called) was relatively easy to configure but the subsequent experience just wasn't worth it. Call quality was very, very poor.
The advantage with SIP/sipgate is that it integrates sensibly with the rest of the world. i.e. you get an actual telephone number and you can make regular telephone calls. This means that the other party doesn't have to install anything or learn anything or even know how you're doing it.
When I signed up (with sipgate), there was no line rental, incoming calls were completely free and outgoing calls were cheap. Free phone numbers were free.