Set up answering machine and retrieve messages

if you have sync set up on your computer with Kies air they should be in there. If you don't they are gone.

Look for the manual of your AT&T 1725 digital answering machine

I have a different model but the default code for mine is 123.
To change the code from the machine, I have to press the STOP/SET button and hold it and wait for prompts.

Here's the manual:
29869GE2 Digital Answering Machine
You will need to set a security code. When you're away you can call your home phone and enter the code to retrieve your messages. Hope this helps.

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Sony TAM-100 Answering Machine

Step I: Set the Remote ID (security code) on themachine itself:

1 Press (SET/REC).
2 Press (ANSWER ON/OFF).

A voice guide will say: “Pleaseset the security code. To select, pressthe SKIP or REPEAT button. To enter,press the SET button”.

3 Set a two-digit number between 00 and 99 bypressing (SKIP/QUICK) or (REPEAT/SLOW). Press (SKIP/QUICK) to increase a number, or (REPEAT/SLOW) to decrease.

Each time you press (SKIP/QUICK)or (REPEAT/SLOW), the answering machine announces a number.

4 Press (SET/REC). The remote ID code (security code) is set,and you hear a long confirmation beep.

To change the remote ID code(security code), Enter a new remote ID code (security code). The new code will replace the old one.

Note: If a powerinterruption occurs, the remote ID code will not be erased.

Please See Next Post to Continue (my response exceedsallowable text restriction ;-) ).

When you first installed your GE Digital Messaging System, you heard the code that was auto set for it. Once you are out and away from home, phone home and during the answering machine promp press # and then the promps will ask you for your 'pass word [code]. Please be careful as messages deleted by you, you may not beable to retrieve them. This machine doesn't run by cassette tapes.
~ hope the above helps.

Remotely Operating Your Answering Machine

Call your telephone number and wait for the answering machine to answer. If the answering machine is off, it will answer after about 10 rings and series of beeping sounds.
During the greeting message (or a series of beeps when the answering machine is off), press [0] and enter your PIN code within 2 seconds (see "Setting a Security Code or Personal Identification Number (PIN)" on page 54).
The answering machine announces the current time and the number of messages stored in memory. You hear "To play incoming messages, press zero-two. For help, press one-zero." You will hear a beep.
Enter a remote command within 15 seconds, each command there after must be entered within 2 seconds.

To retrieve a message from another location, dial the telephone number and when the greeting message starts punch in your four digit code. The default code is 0123 if you haven't set one. Follow the prompts to listen to messages.

Press "3" during the message.

Press "3 twice" after all messages played and you here the two beeps.

If you have not changed the code, it should be set to the default code 1-2-3. Call the phone with the answering machine, and as soon as your greeting starts press 123. You will then hear a menu. Press 1 to retrieve your messages. After listening to your messages, you can listen to the menu again, which will tell you that you can press 0 to delete your messages, among other choices. Cathy