Phone calling features and star codes

AT&T offers a variety of calling features included with your service. Features can be customized using the following star codes or by signing in to the AT&T Phone Portal. For quick reference, see the Phone User Guide (PDF, 417KB). 

Call Forwarding
Feature	Description	Turn On	Turn Off
All Call Forwarding	Forward incoming calls to an alternate number	Dial *72, enter a forwarding number, then press #	Dial *73#
Busy Call Forwarding	Forward all incoming calls to another number when your line is busy	Dial *90, enter a forwarding number, then press #	Dial *91#
No Answer Call Forwarding	Send missed calls to voicemail or to another number	Dial *92, enter a forwarding number, then press #	Dial *93#
Safe Call Forwarding	Forward calls to an alternate number in the event of a service disruption	Dial *372, enter a forwarding number, then press #	Dial *373#

Call Filtering
Feature	Description	Turn On	Turn Off
Call Blocking	Prevent calls from up to 100 numbers from ringing through to your phone	Dial *61 to block individual unwanted inbound calls Learn how to set up and manage a call blocking list online	Dial *80 Deactivate online in the Phone Portal
Call Screening	Accept calls from up to 20 designated numbers only	Activate online in the Phone Portal or Channel 9900 on your TV	Dial *84#
Exclusive Call Forwarding	Forward calls from up to 20 phone numbers to another phone number	Activate online in the Phone Portal	Dial *83#
Digital Phone Call Protect	Automatically block calls from likely scammers and get alerts about suspected spam2	Activate online in the Phone Portal

Incoming Calls
Feature	Description	Turn On	Turn Off
Anonymous Call Blocking	Prevent calls from callers who block their Caller ID information	Dial *77#	Dial *87#
Caller ID	Display your Caller ID information when you make an outgoing call	Caller ID is turned on by default with Phone service
Caller ID on TV	Display incoming Caller ID information on TV screen	Activate online in the Phone Portal or Channel 9900 on your TV	Deactivate online in the Phone Portal
Call Return	Use your phone to call back the last number that called you, even if you didn’t answer the phone.	At the dial tone, press *69	At the dial tone, press *89
Call Trace	Trace the number of the call you received last. Note that there is a fee for each use of Call Trace which varies by area.1	Dial *57#
Do Not Disturb	Prevent all incoming calls from ringing through, giving callers a busy signal	Dial *78#	Dial 79#
Locate Me	Ring incoming calls to your phone number and up to four other numbers	Activate online in the Phone Portal	Dial *313#

Note: You must subscribe to U-verse TV to display Caller ID information on your TV.

Outgoing Calls
Feature	Description	Turn On	Turn Off
Caller ID Blocking	Block your name and number on all outgoing calls	Activate online in the Phone Portal	Deactivate online in the Phone Portal
Caller ID Blocking (single call)	Block your name and number on a per call basis	Dial *67, the number you are calling, then press #	Dial *82, the number you are calling, then press #
Call Waiting	Play an audible tone when an incoming call is waiting to be answered	Call Waiting is activated by default with Phone service
Cancel Call Waiting (all calls)	Stop Call Waiting for all calls so you are not interrupted	Dial *370#	Dial *371#
Cancel Call Waiting (single call)	Stop Call Waiting on a per-call basis so you are not interrupted	Dial *70, the number you are calling, then press #	Call Waiting resumes when you end your call
Cancel Call Waiting (mid-call)	Stop Call Waiting during an active call	Press Flash, dial *70#, then press #	Call Waiting resumes when you end your call
Directory Assistance Blocking	Prevent all outgoing calls to Directory Assistance	Activate online in the Phone Portal	Deactivate online in the Phone Portal
International Call Blocking	Prevent outgoing calls to international numbers	Activate online in the Phone Portal
Three-way Calling	Add a third party to an existing conversation	Press Flash (or get a dial tone), dial the third party, press Flash again	End your call

See all important details