AT&T 974 Caller ID has quit.

Posting this under communications equipment, rather than Cameras, is more likely to get a response

Same thing happened to me. Here's what I did: 1) Unplug phone. 2) Remove backup battery. 3) Wait at least 5 minutes. 4) Plug phone back in and insert battery.

Step 3 is important. I only waited about a minute the first time and the problem remained.

The source of my caller ID not displaying was a faulty ADSL filter.
For some reason my ADSL filter blocked the caller id information - but worked fine otherwise.
When I changed the filter the caller ID worked fine again.

Hard to say. So, go to the cabinet and swap the connections between line 1 and line 2. If the CID still comes in on line 2 and not 1, then it's hardware or programming. If it doesn't come in on 2, then it's a telco issue. Since you checked programming, it would only leave hardware. The 82493 card plugs into a slot on the main board.

Carl

hi,

here is your manual

http://support.radioshack.com/support_phones/doc65/65839.pdf

Check the battery on all the phones then make sure they are all programmed with different extension numbers. If the battery has been dead and you have had a power outage then it may have reset the phone to factory default extension 11.

Press PROGRAM
Press *
Press #
Enter 2 digits (11 through 22)
Press INTERCOM

This should work.

unplug the telephone cable from the back of the receiver and plug it a basic telephone to check if there is a dial tone. if there is a dial tone restart the receiver without the the telephone line plugged in. after it loads and u have a picture, plug in the telephone line. call the home to check. if its not working the modem in the receiver has gone bad.

the digital answer machine did not torn on? Why?

I have the same problem with my unit. Emerson customer service made some suggestions, including pulling the 9V battery, disconnecting the phone from phone and power for 3 hours, etc. Their first suggestion (earlier this morning) was to Push "Up" button and hold for 4 seconds, then pressing the "delete" button three times and re-pressing the "Up" button for 6 seconds. That procedure failed. I'm in the midst of the 3 hour wait after full disconnect of phone line and 120V plug. I don't think my phone will come back. I'll be happy if it does. Good luck with yours...Richard