weird 2-line caller id problem
 

I have an AT&T 2462 2-line, callerid expandable phone system. I have 2
phone lines plugged into it, a regular land phone line, and a Vonage
(internet phone) line. When BOTH phone lines are plugged in together,
the caller-id information doesn't show up. but if i plug in each phone
line by itself, it does work. I have a different (Uniden) 2-line phone,
that works fine with both phone lines together. That's crazy enough.
What's nuttier, is that for a few hours after i set up the system, the
2 phone lines WERE working together, then they stopped. I thought maybe
it was some setting on the base that i changed, but i went through
every setting, changing it, and nothing helped. I called AT&T, and they
said that it needs to be replaced. It seemed to me from the
conversation that the lady had no idea what the problem was, and she
was just saying that to get me off her back. Does anyone here have any
ideas??

Thanks in advance.

I have the same problem with my AT&T 2462 - Did you ever get help on this?
Thanks.