IAX PSTN Call Credit

The TelAppliant/VoIPTalk service works well with Asterisk. I have made calls to the USA, UK and Germany with call quality meeting or exceeding regular PSTN quality. This was done with an Asterisk machine (Pentium 100, 32 MB RAM) from behind a NAT router. The end device was a Grandstream phone. The setup instructions from TelAppliant are clear and easy to follow.