Filter
Top Products
System Phone Display Does Not Work
Possible Cause: Date, day, and time are not set properly.
What to do: Re-enter the date, day, and time using System Date (#101), System Day
(#102),
and
System Time (#103).
■
■
■
■
■
■
If the display is correct, the problem is solved.
If the display is still not correct, see “System Phone Does Not Work.”
Phone Display Does Not
Show Caller ID Name/Number
Possible Cause 1: Not receiving Caller ID service from local phone company.
What to do: Contact local phone company to check on Caller ID service.
If you are not receiving Caller ID service, subscribe to it.
If you are receiving Caller ID service, go to Possible Cause 2.
Possible Cause 2: Wrong 206 and/or 400 module installed in the control unit.
What to do: Make sure lines with Caller ID service are connected to 206EC or 400EC
modules.
If Caller ID lines are not connected to 206EC or 400EC modules, install the
appropriate modules and/or make the appropriate connections.
If Caller ID lines are connected to 206EC or 400EC modules, call the AT&T Helpline.*
Some Caller ID Information Does Not Display
Possible Cause: Not all calls on Caller ID lines will be displayed. This varies by local
phone company.
What to do: If Caller ID information for a large number of calls is not displayed, contact
your local telephone company.
✶
In the continental U.S., help is available at 1 800 628-2888. Outside the continental U.S., call your local
AT&T Authorized Dealer.
Troubleshooting
6-3