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Learn about phone calling features and star codes

Manage your AT&T Phone or AT&T Phone - Advanced features to work for you.

You can turn several calling features on and off through your phone portal or using the following star codes. Keep in mind, not all features can be managed using a star code.

Call forwarding

FeatureDescription
All Call ForwardingSend calls to another number
  • ON: Press *72, enter a forwarding number, then press #
  • OFF: Press *73#
Busy Call Forwarding

Send calls to another number or when your line is busy, voicemail if the call isn’t answered

  • ON: Press *90, enter a forwarding number, then press #
  • OFF: Press *91#
Exclusive Call Forwarding

Send calls from up to 20 phone numbers to another number or your voicemail

No Answer Call Forwarding

Send missed calls to voicemail or another number

  • ON: Press *92, enter a forwarding number, then press #
  • OFF: Press *93#
Safe Call Forwarding

Send calls to another number when there’s a service disruption

  • ON: Press *372, enter a forwarding number, then press #
  • OFF: Press *373#

Call filtering

FeatureDescription
Call Blocking

Stop calls from ringing through to your phone for up to 100 numbers

  • ON: Press *61 for each unwanted inbound call
  • OFF: Press *80 or deactivate online
Call screening

Accept calls from up to 20 select numbers

Exclusive Call Forwarding

Send calls from up to 20 phone numbers to another number

Digital Phone Call Protect

Block calls from likely scammers and get alerts1

Incoming calls

FeatureDescription
Anonymous Call Blocking

Stop calls from callers who block their Caller ID info

  • ON: Press *77#
  • OFF: Press *87#
Call Waiting

Play an audible tone when a call is waiting to be answered

  • ON: Turned on automatically
Cancel Call Waiting (all calls)

Block all calls

  • ON: Press *370#
  • OFF: Press *371#
Cancel Call Waiting (single call)

Block select calls

  • ON: Press *70, enter the number you’re blocking, then press #
  • OFF: Resumes when you end your call
Cancel Call Waiting (mid-call)

Block call waiting during an active call

  • ON: Press Flash, press *70#, then press #
  • OFF: Resumes when you end your call
Call Trace

Get the number of your last call

  • ON: Press *57# (There’s a fee for each trace which varies by area.1)
Do Not Disturb

Stop calls from ringing through, giving callers a busy signal

  • ON: Press *78#
  • OFF: Press *79#
Locate Me

Send calls to your phone number and up to four other numbers

Outgoing calls

FeatureDescription
Caller ID

Show your Caller ID info when you make a call

  • ON: Turned on automatically
Caller ID Blocking (single call)

Hide your name and number on select calls

  • ON: Press *67, enter the number you’re calling, then press #
  • OFF: Press *82, enter the number you’re calling, then press #
Caller ID Blocking
(all calls)

Hide your name and number on all calls

International Call Blocking

Stop calls to international numbers

Three-way Calling

Add a third party to an existing call

  • ON: Press Flash (or get a press tone), enter the number of the third party, then press Flash again
  • OFF: Resumes when you end your call


See all important details

Use these star codes to manage your AT&T Phone Advanced features.

Call forwarding

FeatureDescription
All Call Forwarding

Send calls to another number or voicemail

  • ON: Press *72, enter a forwarding number, then press #
  • OFF: Press *73#
Busy Call Forwarding

Send calls to another number when your line is busy

  • ON: Press *90, enter a forwarding number, then press #
  • OFF: Press *91#
No Answer Call Forwarding

Send missed calls to voicemail or to another number

  • ON: Press *92, enter a forwarding number, then press #
  • OFF: Press *93#
Safe Call Forwarding

Send calls to another number when there’s a service disruption

  • ON: Press *372, enter a forwarding number, then press #
  • OFF: Press *373#

Call filtering

FeatureDescription
Call Blocking

Stop calls from ringing through to your phone for up to 100 numbers

  • ON: Press *61 to block individual unwanted inbound calls
  • OFF: Press *80
Anonymous Call Blocking

Stop calls from callers who block their Caller ID info

  • ON: Press *77#
  • OFF: Press *87#
Digital Phone Call Protect

Block calls from likely scammers and get alerts1

Incoming calls

FeatureDescription
Call Trace

Get the number of your last call. FYI: There’s a fee for each trace which varies by area.1

  • ON: Press *57#
Call Waiting

Play an audible tone when a call is waiting to be answered

  • ON: Turned on automatically
Do Not Disturb

Stop calls from ringing through, giving callers a busy signal

  • ON: Press *78#
  • OFF: Press *79#

Outgoing calls

FeatureDescription
Caller ID

Show your Caller ID info when you make a call

  • ON: Turned on automatically
Caller ID Blocking (single call)

Hide your name and number on select calls

  • ON: Press *67, enter the number you’re calling, then press #
  • OFF: Press *82, enter the number you’re calling, then press #
Cancel Call Waiting (all calls)

Block all calls

  • ON: Press *370#
  • OFF: Press *371#
Cancel Call Waiting (single call)

Block select calls

  • ON: Press *70, enter the number you’re calling, then press #
  • OFF: Resumes when you end your call
Cancel Call Waiting (mid-call)

Block call waiting during an active call

  • ON: Press Flash, press *70#, then press #
  • OFF: Resumes when you end your call
Three-way Calling

Add a third party to an existing call

  • ON: Press Flash (or get a press tone), enter the number of the third party, then press Flash again
  • OFF: End your call


See all important details

Last updated: July 15, 2025

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