Instruct: Classify Amazon reviews into positive or negative sentiment
Query: CID does not work with 2 lines

As mentioned by another reviewer, the Caller ID feature does not work with 2 lines plugged in from 2 seperate jacks (I have no way to test two lines on the same physical wire).Unplug 1 line, and it works. Plug it back in, unplug the other and it works. Plug them both in at the same time and it will say "Waiting for caller information" and never display the number. I have tried all combinations of settings.