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Carrier guide

How to forward AT&T calls to an AI receptionist

AT&T wireless uses a double-star code: dial **21*, the 10-digit number you are forwarding to, then #, and every call forwards in about 2 minutes. Below: the full setup, the **61* style conditional codes that forward only missed calls, testing, and the off switches.

An active AT&T wireless line

AT&T documents forwarding per device under Device Support. Some older AT&T phones used *72 and *73 instead of the codes below.

A number to forward to

Your AskSiya dashboard shows the dedicated local number Siya answers. The 7-day free trial creates one in minutes, no credit card needed.

Your phone's dialer

Enter codes with digits only - no spaces, no dashes, no +1. No app to install, and your business number stays yours.

Setup

Forward every call in 4 steps

  1. Get your forwarding number. Sign up at platform.asksiya.com (7-day free trial, no card) and copy the 10-digit Siya number from your dashboard.
  2. Dial the activation code. In the phone app, dial **21*, then the 10-digit Siya number, then #, and press the call button. Example: **21*2145550123#. Note the two asterisks at the start.
  3. Wait for confirmation. You hear a short confirmation tone or brief recorded message, and the call usually ends by itself.
  4. Make a test call. Ring your business number from a different phone. Siya should answer within about one ring, and the call appears on your AskSiya dashboard with a full transcript.
Recommended

Conditional forwarding: only when busy or unanswered

Most restaurants and front desks want staff answering when they can, with Siya catching the rush, the second line and the after-hours calls. AT&T supports a conditional code per scenario, again with the double-star prefix:

  • When unanswered: dial **61*, the 10-digit Siya number, then #. Turn off with ##61#.
  • When busy: dial **67*, the 10-digit Siya number, then #. Turn off with ##67#.
  • When unreachable (phone off or no signal): dial **62*, the 10-digit Siya number, then #. Turn off with ##62#.
  • Clear every conditional rule at once: dial ##004#. Check what is currently set with *#21#.

Conditional forwarding effectively replaces AT&T voicemail: a call you do not pick up reaches Siya before voicemail can grab it, so missed callers meet a receptionist who takes the order or booking instead of a beep.

These are the standard GSM codes AT&T devices use, but AT&T publishes them per device and codes can vary on older hardware - if one errors, check your model's guide on AT&T support or dial 611.

Verify

Test it, and turn it off any time

Test all-call forwarding by calling your business number from another phone: Siya should answer in about one ring. Test conditional forwarding two ways: call while your line is on another call (busy path), then call and let it ring out (no-answer path). Each test appears on your dashboard with a transcript, so you can confirm exactly what callers hear.

To turn it off: dial ##21# to cancel all-call forwarding, ##61#, ##67# and ##62# for individual conditional rules, or ##004# to clear all conditional forwarding in one go. Calls then ring your phone exactly as before.

Why bother

Why forward to an AI receptionist

AT&T forwards the call; Siya answers it. She picks up 24/7 in about one ring, takes restaurant orders and hotel bookings straight onto your dashboard, speaks 100+ languages, and starts at $19/mo for 60 minutes with a 7-day free trial, no card required. Plans auto-upgrade as your call volume grows, so callers never hit a busy signal. See what voicemail is costing you with the free missed call revenue calculator.

On another carrier? See the guides for Verizon, T-Mobile, Google Voice, Rogers, Bell, TELUS and Freedom Mobile.

FAQ

Frequently asked questions

AT&T's wireless network expects the GSM registration form of the code, which starts with two asterisks: dial **21*, the 10-digit number, then #, with no spaces, dashes or +1. If your device rejects it (usually older hardware), try the legacy *72 activate and *73 cancel pair, or check your model's guide on AT&T Device Support.

Effectively yes. With **61* (no answer) and **67* (busy) pointed at Siya, calls you cannot take reach her before AT&T voicemail engages - callers get an answer and an order or booking instead of a mailbox.

Dial *#21# for all-call forwarding status; *#61#, *#67# and *#62# report each conditional rule, showing on screen whether it is active and the registered number. ##004# clears every conditional rule in one go if you want a clean slate.

Call forwarding is included with most current AT&T wireless plans, but forwarded calls can use plan minutes on limited plans. Confirm on your plan page or with AT&T (dial 611) before forwarding around the clock.

Two asterisks away from never missing a call

Hear Siya handle a real conversation before you dial anything - the browser demo takes 2 minutes.