Call Waiting - Star Codes

Star Codes

For more details on this topic, see Vertical service code.

In North America, the NANP uses the *70 star code before a call to suspend call waiting for that call. A stuttered then regular dial tone confirms the de-activation.

On most European telephone networks, and GSM or UMTS mobile phones, call waiting is activated by dialing the following codes:

  • To activate: *43#
  • To deactivate: #43#
  • To check status: *#43#

A voice announcement, tone or a message on your phone's screen will confirm the service status.

Call waiting in Europe uses an "R" (recall) button on the phone. This performs a similar function to a North American hook flash button but is much shorter duration, typically 80ms to 100ms, vs. 250ms in North America. In some networks, pressing R toggles between the calls, similar to North America. However, in most countries there are further options:

  • R1 - Answer the waiting call and hang up on the current call.
  • R2 - Toggle between the calls.
  • R3 - Merge the two calls for conference calling.
  • R0 - Reject call waiting - This will send the call to voice mail or a busy tone.

Type II Caller ID also works with call waiting.

Read more about this topic:  Call Waiting

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