Qwest S1 Benutzerhandbuch

You can also place calls from your phone by  using speed dial numbers 
(page 34), using your Contacts (page 33), using your Call History listings
(page 84), and by using Voice-Activated Dialing (page 107).

To use a Voice Dial, you must have stored Voice Dial entries. (See
“Programming Voice Dial Tags” on page 108.)

To redial your most recent call (outgoing, incoming, or missed), press 

twice.

When making calls off the home network, always dial using 11 digits 
(1 + area code + phone number).