Here's a puzzlers for you expert Asteriskians: Person A in Australia with Xten-Lite connects to: Person B on an Asterisk server in Vancouver, Canada (B is on analog phone to FXS port) quality is fine. Person B on an Asterisk server in Vancouver IAX trunks to our Vancouver PSTN gateway (running Asterisk and connected to a PRI) and calls (placing a local landline call) to Person C on a regular PSTN phone line quality is fine. Person A links to B, trunks to C, connects to local Vancouver number. quality in both directions is crappy -- choppy to the point of unintelligible. So each leg tested separately works fine. The two put together do not. Where should we look? What parts of which configurations do you need to see to diagnose the problem? Thanks for any and all suggestions. g.