How to Set Up Call Forwarding on AT&T
How to set up call forwarding on AT&T to CallClerk. Use AT&T dial codes or the myAT&T app to forward calls to your AI receptionist.
Step-by-Step Instructions
Follow these 4 steps — takes less than 60 seconds
Open Your Phone Keypad
Open the Phone app and tap the keypad.
Dial the Forwarding Code
Type *21* followed by your CallClerk number, then #. Example: *21*5551234567#
Press Call
Press the Call button. You'll hear a confirmation tone or see a message that call forwarding is active.
Done!
All incoming calls to your AT&T number will now ring your CallClerk AI receptionist.
Tips & Notes
- To deactivate all forwarding: dial #21# and press Call.
- To deactivate all conditional forwarding: dial ##002# and press Call.
- AT&T may charge for forwarded minutes on some plans — check your plan details.
- You can also manage forwarding in the myAT&T app under Phone Features.
We recommend using conditional forwarding (*61*) so you can answer calls yourself during the day, and CallClerk picks up anything you miss automatically.
Test a Live AI Receptionist in Your Browser (60 Seconds)
Before forwarding your AT&T number, click your industry below to talk live with our sub-second AI voice agent:
Other Setup Guides
Find instructions for your specific device or carrier
Now Let CallClerk Answer for You
You've set up call forwarding — now let your AI receptionist handle the rest. 24/7 coverage, appointment booking, and lead capture starting at $49/month (50% OFF $99).
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