Aug 23, 2022 · I am experiencing the CL4940 displaying “incoming call” only and not showing any caller id information. My Radio Shack external caller ID ...
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Defective Telephone Wall Jack. If changing the telephone line cord does not help, the wall jack (or the wiring to this wall jack) may be defective. Try using a ...
Aug 24, 2022 · I have a landline home phone that uses an AT&T CL4940. Every now and then the year changes to last year's date, just the year, nothing else.
Tip 1 of 4. You may have a defective telephone cord. Try replacing cord between the jack and telephone base. Next Tip This solved my problem. Tip 2 of 4.
May 2, 2023 · I have set up the out-going message on my CL4940 phone but when I call to check it, it plays the pre-recorded greeting.
The DSL signal can cause static/noise, squealing (similar to fax tones), caller ID disruption and other issues on your line. DSL filters block the high ...
Nov 23, 2021 · Phone Problems. Found 1 result(s) for your search. ATT CL4940. No ring tone when call comes in, shows who called, no message recording. 2 wks ...
Oct 26, 2016 · When the screen has no other messages, like missed calls, then the CL4940 appears on the top of the screen. 0. 0 ...
Please thoroughly read this user's manual for all the feature operations and troubleshooting information necessary to install and operate your new AT&T product.
Nov 10, 2017 · The line disconnect micro switch checks ok but the phone will not hang up from the land line, it does however show normal display responses ...