TomTom Hands-Free Car Kit Reference Manual page 11

Redialling
To redial the last number you dialled, press and hold the Accept call button on your Car Kit.
Note: Not all phones support redialling using your Car Kit. If it's not possible to redial, your Car
Kit tells you.
Making a call
You can start a call by dialling a number or selecting a contact on your phone.
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You can use speech recognition on your phone to start a call.
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