This is a really aggravating problem. Having successfully got the whole system working, even after I had changed the IP address of the pc to be fixed, I thought I was home and dry. The next day, I booted up and the line to the VOIP provider didn't register (but the extensions did). Easily fixed by clicking on the "register line" button. All working perfectly. The next day (yesterday) booting up the pc resulted in the VOIP provider line registering successfully, but neither of the extensions did. Today, the same result. Here's the log: Any ideas as to what I've done wrong?