Skip to main content

How to Set Up Call Forwarding on AT&T

Quick guide to enabling immediate or missed-call call forwarding from your AT&T device to work with LeadTruffle.

Bryan Shankman avatar
Written by Bryan Shankman
Updated over 2 months ago

Overview

To ensure LeadTruffle can capture and qualify every lead via AI voice answering, set up call forwarding from your AT&T number to your LeadTruffle-assigned number.

⚠️ iPhone users — Check Live Voicemail
​

Live/Visual Voicemail can intercept calls before forwarding. You may want to disable it during setup:

  • Settings → Phone → Live Voicemail → Off

There are two forwarding types:

  • Unconditional (immediate): forwards all calls (won’t ring your phone first)

  • Conditional (missed/busy/unreachable): forwards only missed calls (recommended)

📞 Conditional Call Forwarding (Missed calls only — Recommended)

Use when you want your phone to ring first; if you don’t answer (or you’re busy/unreachable), the call forwards to LeadTruffle for instant follow-up.

Availability of star-codes can vary by AT&T plan/line. If one code doesn’t work, try the others or contact AT&T to enable conditional forwarding.

✅ Option A — Turn on each condition individually (most reliable across AT&T plans)

Condition

Activate

Disable

If unanswered

*61*<number>#

#61#

If unreachable (off/no service)

*62*<number>#

#62#

If busy

*67*<number>#

#67#

Steps (example: forward if unanswered)

  1. Open the Phone app and keypad

  2. Dial *61*<Your LeadTruffle Number>#

  3. Press Call, wait for confirmation, hang up

  4. Repeat with *62* and/or *67* if needed

  5. Test: Call your number and let it ring — it should forward to LeadTruffle

✅ Option B — Forward all missed call types at once (if supported by your AT&T plan)

Activate:

*004*<Your LeadTruffle Number>*11#

Disable:

#004#

Steps

  1. Open the Phone app and keypad

  2. Dial *004*<Your LeadTruffle Number>*11#

  3. Press Call, wait for confirmation, hang up

  4. Test: Call your number and let it ring — after a few rings it should forward to LeadTruffle

Note: *11 is a standard voice-service identifier, not a ring-count setting. AT&T typically uses a default ring duration (~15–20 seconds / 4–5 rings). Adjustments may require AT&T support.

✅ Unconditional Call Forwarding (All calls → LeadTruffle)

Use when you want every inbound call to go straight to LeadTruffle.

Set up

You can typically set Unconditional Call forwarding directly in your iPhone settings.
​
​Here is an example guide from AT&T on how to do this.

If this doesn't work, you can try using your keypad instead:

  1. Open the Phone app and keypad.

  2. Dial: *21*<Your LeadTruffle Number>#

    Example: *21*9995554567#

  3. Press Call.

  4. Wait for the confirmation tone/message, then hang up.

Test it

  1. From another phone, call your AT&T number.

  2. It should connect directly to LeadTruffle (no ringing on your device).

Turn it off (un-forward)

  1. Open the keypad and dial #21#.

  2. Press Call and wait for confirmation.

Note: While active, your device won’t receive calls; everything routes to LeadTruffle.

📱 iPhone & Voicemail Tips

  • Ensure Live Voicemail is OFF (Settings → Phone → Live Voicemail → Off).

  • If calls still land in AT&T voicemail before forwarding, your voicemail may pick up too quickly. Increase the ring time or temporarily disable advanced voicemail so forwarding can trigger first.

  • Always run a test call after setup.

💡 Best Practices

  • Forwarding may override access to your AT&T voicemail while active.

  • Forwarded calls count toward voice minutes; long-distance may apply.

  • If you change your LeadTruffle forward-to number later, disable the old forwarding first (#21# or #004# / #61# #62# #67#), then re-enable with the new number.

  • Keep a quick rollback handy:

    • Unconditional off: #21#

    • Conditional off: #004# (or #61# / #62# / #67# individually)

Did this answer your question?