I have a kind of a unique problem. I have a UC520 installed with 3 PSTN lines plugged into the FXO ports.
The problem is that one of the lines is not passing Caller-ID information, while the other 2 are. I've verified that caller-ID information is available by plugging a phone directly into the PSTN line, so it doesn't appear to be a problem with the line itself.
I've also tried switching FXO ports, but the problem follows the PSTN line.
Can't quite figure this one out. Anyone have any suggestions?
jc