BlueAnt S3 COMPACT Guia Del Usuario página 12

Redial and Call Back
> Hold down the + symbol for about 3 seconds to redial the last outgoing call.
> Hold down the - symbol for about 3 seconds to call back the last incoming call.
Switching Between Multiple Calls (Call Waiting)*
> Tap the - symbol to end your call and answer an incoming call.
> Tap the + symbol to put your call on hold and answer an incoming call.
> Tap the + symbol to switch between an active and a held call.
* To use this feature, your phone and network must support call waiting.
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