Your AT&T VoiceMail Service access number is: 1-888-288-8893. When calling from home, if prompted, enter your password followed by #. If you are not calling from home, you will be prompted to enter your 10-digit telephone number followed by your password, then just follow the system prompts. From any Home screen, tap Phone. Touch and hold 1 or dial 123 and tap Call, or tap the Voicemail icon to call voicemail.
Configuration guides of tested IP phones, soft phones, door phones, audio alerter devices, and intercom devices.

If you don’t know what to say in your voicemail, here’s a few pointers to get you started: Make sure that you’re not yelling into the phone and the message is recorded in a somewhat quiet area. If the message is for work, try to keep it professional and avoid mistakes, if possible. If you’re working in retail, apologize for not picking up and note that you will call them back. Regardless of your occupation, try to keep the message short. It shouldn’t be longer than 25 seconds. If the voicemail is personal, feel free to leave a silly, short message that lets the caller know it’s you.
Tap on Voicemail; From there, you can turn Voicemail on or off, set your Greeting as a default (or record a custom greeting), and turn Voicemail Transcription on or off. Record your own voicemail greeting. Note: Recording a custom voicemail greeting is only available through our iOS or Android app versions.