iFixit - Answers With Device "ATT Landline Phone"

ATT EL52300: Why does handset read Out of Range or No Power at Base?

Sat, 21 Mar 2026 16:15:27 -0700

When I am trying to place a call, the message says out of range even though I am close to the base

⟐ Commented March 21, 2026 at 16:15 MST

ATT CL4940: Phone won't dial a contact in the directory.

Wed, 18 Feb 2026 12:15:00 -0700

Clearly a problem. Have disconnected power and plugged back in but no joy. I have a dial tone and if I enter the number manually then it will make the call.

All and any suggestions / tips will be appreciated.

Mike

ATT CL4940: How can I get to make this phone give the maximum amount of incoming r

Mon, 09 Feb 2026 00:55:46 -0700

How can I get to make this phone give the maximum amount of incoming rings.

⟐ Answer edited February 09, 2026 at 0:55 MST

ATT CL4940: My phone won't ring on incoming calls

Sun, 08 Feb 2026 14:51:39 -0700

Phone has dial tone and I can call other people but it won't ring when they call even tho the caller hears ringing. On thier side

⟐ Answered February 08, 2026 at 14:51 MST

ATT CL4940: will not hang up

Tue, 21 Oct 2025 07:09:04 -0700

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 to the hang up switch. It will just not disconnect from the land line.

When I replace the handset in the cradle the conversation will not disconnect. If I disconnect the landline from the phone the conversation will disconnect. If I reconnect the landline with the phone hung up I can hear a dial tone and then after a while a continually busy signal . Calling my landline with the cl4949 connected produces a busy signal . Is there a switching transistor in the circuit of the 4940 that is leaking?

I can use the phone as long as I physically remove the landline to hang up. The landline must remain disconnected or the line will lock up and no other phone in my home will work. With the 4940 disconnect from the landline all my other phones work ok.

Thanks,

Robert

Speaker button checks Ok with an ohmmeter. This problem with the line control started after an electrical storm. Does anyone have an electrical diagram?

Thanks,

Robert

⟐ Edited by author October 21, 2025 at 7:09 MST

ATT Trimline 210M: How can I set the one touch dialing?

Fri, 19 Sep 2025 08:30:08 -0700

I followed the manual but my phone doesn't seen to accept my one touch or memory entries.

⟐ Commented September 19, 2025 at 8:30 MST

ATT Trimline 210M: When I call the trim line phone it does not ring

Wed, 18 Jun 2025 19:56:39 -0700

When I call it does not ring and the ringer is not off

⟐ Answered June 18, 2025 at 19:56 MST

ATT CL4940: Can't Tilt Screen, feels like it will break if I do.

Fri, 21 Jun 2024 10:36:07 -0700

I tried to tilt the screen, but it resists strongly. I fear breaking this fine phone. I pulled it up about as far as I could without breaking something and stuck a piece of wood to hold it there, but that is an unsatisfactory answer. Is there some trick to it?

⟐ Answered June 21, 2024 at 10:36 MST

ATT Landline Phone: Can't receive incoming landline calls. It gives caller a busy signal

Sat, 08 Jun 2024 01:04:41 -0700

My phone is hung up properly. I can make outgoing calls but cannot receive incoming. The caller receives a busy signal when calling.

⟐ Commented June 08, 2024 at 1:04 MST

ATT CL2940: landline phone ringer not working.

Sat, 13 Apr 2024 13:56:16 -0700

The landline phone instrument is working fine supporting outgoing calls but the phone isn't ringing during incoming call, the phone loudspeaker is also working fine.

⟐ Answered April 13, 2024 at 13:56 MST

ATT CL4940: Why ongoing calls hang up when Speaker button pressed?

Tue, 19 Mar 2024 12:37:22 -0700

With our CL4940 during an ongoing call, pressing Speaker and placing the handset in the base hangs up the calll, even though the instructions say this is what to do. Do you see the same issue? Or do you know of any workarounds?

⟐ Answer accepted March 19, 2024 at 12:37 MST

ATT CL4940: Why does the phone ring when I cough?

Mon, 26 Feb 2024 07:31:42 -0700

If I’m not using the phone, and a loud noise occurs in the room. A sneeze, cough or other loud noise. The phone starts ringing until I pick up the handset and hang it up. Why?

⟐ Commented February 26, 2024 at 7:31 MST

ATT CL4940: Caller ID stopped working

Thu, 22 Feb 2024 02:45:38 -0700

Caller ID stopped working

⟐ Commented February 22, 2024 at 2:45 MST

ATT Landline Phone: I can't delete the old greeting for my store

Mon, 12 Feb 2024 18:39:32 -0700

I have recently purchased a store with this phone system. I have recorded a new greeting for line 1 and it is saved in the machine. However, when I call my store, it still plays the OLD greeting, which is not saved anywhere in my system. I can’t delete the old greeting. It’s like a ghost in the machine? So bizarre.

⟐ Commented February 12, 2024 at 18:39 MST

ATT EL52300: Handset screen says “initial” and will not charge new battery

Mon, 23 Jan 2023 12:19:44 -0700

Handset screen says “initial “ and will not charge new battery

ATT CL4940: Phone cradle holder broken

Wed, 04 Jan 2023 08:15:22 -0700

The plastic that the phone in the cradle attaches to broke. It slides up and down and removes easily. Can it be e replaced

⟐ Answered January 04, 2023 at 8:15 MST

ATT CL4940: Adding an additional phone?

Mon, 10 Oct 2022 15:06:58 -0700

Is there a model stand alone cordless that I can buy for my CL4940 Landline. I just want another phone in my guestroom

⟐ Answered October 10, 2022 at 15:06 MST

ATT Landline Phone: How do I retrieve a deleted "saved" voice message

Tue, 24 May 2022 19:12:58 -0700

How do I retrieve a deleted "saved" voice message from my AT&T DECT 6.0 cordless telephone/ answering system with caller ID/call waiting. Deleted it by mistake. The message was recorded on the telephone base.

⟐ Answered May 24, 2022 at 19:12 MST

ATT EL52300: How to open phone to remove battery

Fri, 09 Jul 2021 20:24:08 -0700

can’t get the battery cover off to remove battery

⟐ Answer accepted July 09, 2021 at 20:24 MST

ATT CL4940: Why is my device not recording any messages?

Fri, 23 Apr 2021 05:49:29 -0700

When I miss a call, the device will not record or save any of the messages people leave. What should I do?

⟐ Answer deleted April 23, 2021 at 5:49 MST