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Item#: 9SIA9D14607197

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  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews

This two-line speakerphone with Caller ID and Digital Answering System is perfect for small businesses that need two-line support and a variety of features. Fully integrated answering machine makes it easy to screen calls and check your messages while away. Large easy-to-read display clearly shows phonebook entries and Caller ID information. Speakerphone is compatible with most headsets (via 2.5mm jack) and hearing aids. Offers 100 name/number directory, selectable ringer tones for both lines, line status indication, data port, hold, mute, automatic line selection, chain dialing, trilingual setup menu. Answering system offers up to 12 minutes of digital recording time for each line, call screening/intercept, remote access, message time/day stamp, voice prompts and memo recording.

Learn more about the AT&T ML17939


Body Color


Integrated Answering Machine
Multiline Operation Capability
2-line Operation
Conference Call Capability
3-Party Conferencing
Caller ID
Call Waiting
Volume Control

Additional Features

Additional Features
Highlighted Features
Fully Integrated Digital Answering System
2-Line Operation
Clearspeak Dial-in-Base Speakerphone

Automatic Line Selection
Chain Dialing
English/Spanish/French Setup Menu
Headset Compatibility
Headset Compatible (2.5 mm jack)
Hearing Aid Compatible
Line Power Mode--for use
Line Status Indication

Answering Systems
Call Screening/Intercept
Digital Answering System for Each Line
Memo Recording
Message Time/Day Stamp
Remote Access
Up to 12 Minutes of Digital Recording Time for Each Line
Voice Prompts

Phone Memory

Phone Directory Memory
Speed Dial Memory
Caller ID Memory

Answering System

Answering System Type
Recording Time
Up to 12 Minutes
Message Time / Date Stamp


Display Features
Caller ID Displays on Handset(s) and Base


Data Port


1 year limited
1 year limited
Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 1 year
  • Limited Warranty period (labor): 1 year
  • Read full details

Customer Reviews of the AT&T ML17939

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  • Fred G.
  • 2/20/2015 8:29:21 AM
  • Ownership: 1 day to 1 week
  • Verified Owner

1 out of 5 eggsBroken, bad RMA process

Pros: Has decent features, display, headset jack, speaker.

Cons: Arrived broken or is simply unusable due to extremely loud, hyper-distorted sidetone (mic feedback in earpiece). When I talk I hear a very loud scratchy noise -- basically my voice as if fed through a totally broken amplifier -- in the earpiece, both on headset and handset. It makes conversation almost impossible, unless you say "over" like on a CB. We'll see if they send a replacement and if it works.
Also, when used with 1 line (they don't make a 1-line version), it always displays an error message that L2 is missing. That should be possible to turn off.
Looking at the CID log is also more complex than necessary.

Other Thoughts: NewEgg's RMA process is borked. It tries to get you to pay $19 for a UPS label to send back DOA junque, or you spend hours dealing with a fairly well hidden phone return number (I googled it) that eventually calls you back and with luck you get a UPS label in email at some point in the future. Not customer friendly at all.
Plus AAT's (the company that licenses the AT&T name) QC seems to be awful.

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  • Antonio M.
  • 9/2/2014 8:58:09 AM
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggs

Pros: Great phone, love the features. very solid and well built.

Cons: Telephone cable port would be better placed at the top/back. A bluetooth option for the headset would be great.

Other Thoughts: This blows away my previous similar featured GE model. The GE would 'lock up' when a low pressure system came through the area.

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  • JON M.
  • 3/19/2011 1:25:11 PM
  • Ownership: 1 week to 1 month

2 out of 5 eggsDisappointing

Pros: Professional looking; good (high) angle on the desk; nicely weighted handset; good voicemail menu and features

Cons: Huge, hard-to-press dialing buttons; poor outgoing sound quality, especially on the speaker phone; Line 1 doesn't ring audibly then Line 2 is in use

Other Thoughts: I really wanted to like this phone. Aesthetically, it's the nicest one I could find. It is chockful of features that I want, like one-touch speed dialing buttons, independent voice mail systems on the two lines, conference calling, and speaker phone with mute. Unfortunately, it has three fatal flaws that will cause me to get a different phone: 1) The number keys are ENORMOUS and very stiff. It's like you're dialing on a child's toy phone. If you dial quickly, you'll be very frustrated how surprisingly difficult it is to dial on this phone. You have to deliberately press each key quite firmly, and since the keys are so far apart, you have to move your whole hand instead of just pointing your finger. It sounds trivial, but when you make a lot of calls in a day, it's very annoying. 2) The outgoing sound quality is quite poor. People I called constantly complained that my voice was distorted (over-modulated) on the handset or muffled on the speakerphone with a bad echo. 3) If you

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AT&T > 
Item#: 9SIA9D14607197
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