Looks like everyone thinks the trouble is with the IPK II.

One of the reasons I was thinking it could be the providers problem is we have had issues with them the first couple of months after the install.
One of the problems, out of the blue they stopped sending ringning voltage, they sent one of their techs out and of course said it was the PBX. It wasn't. And there has been other issues that I'm not going into

We get old too soon, smart too late