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Add a Custom Greeting to Your Microsoft Teams Auto Attendant

In the Teams admin center, open Voice, then Auto attendants, and edit your attendant's business-hours or after-hours call flow. Choose Play an audio file and upload a WAV, MP3, or WMA file up to 5 MB for the greeting or any menu prompt. Auto attendants also need a licensed resource account and a Teams Phone calling plan.

Updated September 27, 2026

What Microsoft Teams accepts

Accepts
WAV (uncompressed linear PCM, 8/16/32-bit, mono or stereo), WMA (mono only), or MP3
Limits
5 MB per audio file; a typed greeting (read by text-to-speech instead) can run up to 1,000 characters
Your download
WAV, 16 kHz 16-bit mono, or MP3, both well under 5 MB

Before you start

  • Teams admin center access under Voice, plus a Microsoft Teams Phone Resource Account license for the auto attendant
  • Teams Phone with a calling plan, Operator Connect, or Direct Routing for your organization
  • Your greeting and any menu prompts as a WAV, WMA, or MP3 file under 5 MB
  • A resource account (and a phone number, if callers dial the attendant directly) already created

Step by step

  1. Add a new auto attendant

    In the Teams admin center, expand Voice, select Auto attendants, then Add. Choose Advanced setup for full control over greetings, hours, and menu options.

  2. Set the name and resource account

    Name the attendant and choose how callers reach it: through a resource account for a direct number, or as a nested attendant behind another auto attendant or call queue.

  3. Set business hours

    Set the time zone and your open hours. Anything outside those hours automatically follows the after-hours call flow you set in a later step.

  4. Upload the business-hours greeting

    Under business-hours call flow, choose Play an audio file, then Upload file, and add your WAV, MP3, or WMA greeting (5 MB max). Then choose what happens next: disconnect, redirect, or play menu options.

  5. Build the menu and upload prompts

    For Play menu options, upload an audio file or type a greeting for the introduction, then set a dial key, an optional voice command, and a destination for each option.

  6. Set the after-hours and holiday greetings

    Repeat the greeting and routing steps for the after-hours call flow, then add holiday call flows for specific closure dates if you want a different message.

  7. Test and go live

    Use the built-in auto attendant diagnostic tool to confirm the resource account can receive calls, then call the assigned number yourself to walk the whole menu.

Tips

  • Keep every menu prompt in the same voice as the main greeting so the whole phone tree sounds consistent.
  • A typed text greeting is read by Teams' own text-to-speech voice, not yours, so upload audio instead if you want one consistent voice throughout.
  • Nest a second auto attendant behind a key instead of building one giant menu; Teams supports linking attendants together.

Build your phone tree

Get a full Microsoft Teams auto attendant, greeting plus every menu prompt, exported as a WAV or MP3 well under the 5 MB limit.

Build your phone tree

Common questions

What audio formats does a Microsoft Teams auto attendant accept?

WAV (uncompressed linear PCM, 8, 16, or 32-bit, mono or stereo), WMA in mono, and MP3, each up to 5 MB. Anything larger has to be trimmed or re-exported before Teams will accept it.

Do I need a special license to set up an auto attendant?

Yes. Each auto attendant needs a licensed resource account, specifically a Microsoft Teams Phone Resource Account license, and your organization needs Teams Phone with a calling plan, Operator Connect, or Direct Routing.

Can I use different greetings for business hours, after hours, and holidays?

Yes. Teams lets you set a separate greeting and call flow for business hours, after hours, and up to 20 holiday sets, so a holiday closure message doesn't require touching your everyday greeting.

Can I record the greeting instead of uploading a file?

The admin center only offers Play an audio file (upload) or a typed text-to-speech message; there's no record-by-phone option for the greeting itself, so you'll need a finished audio file ready to upload.

How many menu options can one auto attendant have?

You can assign the 0 to 9, star, and pound keys to routing destinations, and menus don't have to use every key. Nest another auto attendant behind a key to add a submenu.

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