Model: EL51203
This manual provides comprehensive instructions for setting up, operating, and maintaining your AT&T EL51203 DECT 6.0 Cordless Home Phone system. This system includes two cordless handsets and a base unit, designed for clear communication and ease of use.

Image: The AT&T EL51203 cordless phone system, showing the base unit with one handset and a separate charging cradle with the second handset.
Your AT&T EL51203 package contains the following items:
Follow these steps to set up your AT&T EL51203 cordless phone system.
Nota: Use only the supplied rechargeable Ni-MH battery packs. Non-rechargeable batteries may cause damage or injury.
Important: Use only the power adapters provided with this product.
Nota: If you have DSL high-speed internet service, a DSL filter (not included) is required.
Place each handset in its respective base unit or charger with the display facing up. The CHARGE light on the handset will illuminate. Allow the handsets to charge for at least 16 hours before first use to ensure optimal battery performance.
The handset features an easy-to-read, high-contrast backlit LCD display for clear viewing of incoming Caller ID and call history. The lighted keypad facilitates dialing in low-light conditions, and its enlarged font and extra-large keys improve usability.

Image: A close-up of the cordless phone's screen displaying a caller's name and number, along with the time and date.

Image: A hand pressing a large, backlit button on the cordless phone's keypad, highlighting the ease of use.
The built-in full-duplex speakerphone allows both parties to speak and be heard simultaneously, enhancing conversation quality.

Image: A woman using the cordless phone's speakerphone feature while preparing food in a kitchen, demonstrating hands-free communication.
This feature displays the name, number, time, and date of incoming calls. A subscription to Caller ID service from your telephone service provider is required.

Image: A close-up of the cordless phone's screen displaying "CHARLIE JOHNSON 800-222-3111" with the time and date, illustrating the Caller ID feature.
Emmagatzemeu fins a 50 noms i números a la llibreta telefònica per marcar ràpidament.

Image: The cordless phone handset showing a menu for the phonebook directory, with an alphabetical list of contacts.
Eco Mode is a power-conserving technology that manages power consumption for optimal battery performance. It activates automatically when the handset is close to the base unit.
Temporarily silences the ringer on all handsets and the base unit for a set period (e.g., 1 to 12 hours). Calls will still go to voicemail if available.
Allows communication between two handsets within the system.
To ensure the longevity and optimal performance of your phone system, follow these maintenance guidelines:
If you experience issues with your phone, try these common troubleshooting steps:
| Problema | Solució |
|---|---|
| Sense to de marcatge |
|
| El telèfon no es carrega |
|
| Mala qualitat de so / Estàtica |
|
| No es mostra l'identificador de trucades |
|

Image: Diagram showing the dimensions of the base unit: Height 6.90 inches, Width 3.25 inches, Length 4.77 inches.

Image: Diagram showing the dimensions of a handset unit: Height 6.93 inches, Width 3.34 inches, Length 2.95 inches.
For warranty information and technical support, please refer to the official AT&T product documentation or visit the AT&T support weblloc web. Conserveu el rebut de compra com a comprovant de compra per a reclamacions de garantia.
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