Editing Call waiting (section)

==Star codes==
{{details|Vertical service code}}
In North America, the [[NANP]] uses the *70 [[star code]] prefix to suspend call waiting for a dialed call.  A stutter [[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.