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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