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UC520 not passing caller-id

John Carney
Level 1
Level 1

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

1 Reply 1

paolo bevilacqua
Hall of Fame
Hall of Fame

Some lines have trouble due to level, or noise, etc.

You can adjusting input-gain up or down for a test, but is not said will work.