Is there a jack to insert a headset on this phone?

I was wondering the same thing. I need a headphone jack, and I think it's ridiculous to make one of these phones without a jack on it.

This might sound like a stupid question, but does this work with any kind of line service or just for AT&T? :)

Hi, it will work with ANY line service.

What is the range of the Phone from base charger?

Range of a cordless phone varies from one environment to another, and can never be predicted. AT&T DECT 6.0 cordless phones have excellent range potential.

What is the handset frequency of this phone

Hi - The AT&T EL51103 is a DECT 6.0 unit which operates on the 1.9GHz frequency. Thank you!

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EL51203 DECT 6.0 2-Handset Cordless Phone with Full-Duplex Speakerphone, Backlit Display & Lighted Keypad, Caller ID/Call Waiting, Intercom, ECO Mode

EL51203 DECT 6.0 2-Handset Cordless Phone with Full-Duplex Speakerphone, Backlit Display & Lighted Keypad, Caller ID/Call Waiting, Intercom, ECO Mode

Product ID: 16021046

Details

Answering System Type
No
Brand
AT&T
Color
Silver
Compatible Devices
AT&T
Item Weight
1.5 pounds
Item dimensions L x W x H
4.76 x 3.29 x

📞2 handsets for seamless multi-room use

🔊Full-duplex speakerphone for natural convo

🔋ECO mode extends battery life

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Description

📞 Elevate your home office calls with clarity and style — never miss a beat!

EFFORTLESS VISIBILITY - Extra-large backlit display and lighted keypad ensure dialing and caller ID are easy in any lighting.
DUAL HANDSET POWERHOUSE - Stay connected anywhere at home or office with 2 cordless handsets and intercom.
ECO FRIENDLY EFFICIENCY - Power-saving ECO mode maximizes battery life so you’re always ready, reducing energy waste.
SMART CALLER MANAGEMENT - Caller ID/Call Waiting with 50-call history helps you screen and prioritize calls like a pro.
CRYSTAL CLEAR CONVERSATIONS - Full-duplex speakerphone lets you talk and listen simultaneously—no more awkward pauses.

The AT&T EL51203 is a sleek DECT 6.0 cordless phone system featuring 2 handsets with intercom, full-duplex speakerphone, and an extra-large backlit display with lighted keypad. It supports caller ID/call waiting with a 50-call history, offers ECO mode for extended battery life, and ensures crystal-clear, interference-free calls—perfect for busy professionals managing calls across home or small office environments.

Specifications

ASIN	B00N22M0XS
Answering System Type	No
Best Sellers Rank	#7,708 in Office Products ( See Top 100 in Office Products ) #22 in Landline Phones
Brand	AT&T
Built-In Media	2 Cordless Handsets
Color	Silver
Compatible Devices	AT&T
Conference Call Capability	2 way
Customer Reviews	4.3 out of 5 stars 18,682 Reviews
Enclosure Material	Plastic
Global Trade Identification Number	00650530025914
Item Dimensions	4.76 x 3.29 x 6.81 inches
Item Type Name	Landline Phone
Item Weight	1.5 pounds
Manufacturer	Vtech
Material	Plastic
Mfr Part Number	EL51203
Model Number	EL51203
Multiline Operation	Multi-Line Operation
Number of Batteries	2 AA batteries required. (included)
Number of Items	1
Number of Packs	2
Phone Standby Time	5 days
Power Source	Battery Powered
Recording Capacity	22 minutes
Telephone Type	Cordless
UPC	650530025914
Unit Count	1 Count
Warranty Description	1-year limited warranty

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EC$331

Duties & taxes included

In stock

Sold byAmazon Saint Vincent and the GrenadinesDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Saint Vincent and the Grenadines.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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