CITROEN C1 2015 Handbook page 206

Audio and Telematics
Receiving a call
An incoming call is announced by a ring and a
superimposed display in the screen.
Make a short press on this steering
mounted button to accept an
incoming call.
Press on this steering mounted
button to reject a call or to end a call.
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Making a call
Calling a new number
Use of the telephone is not
recommended while driving. We
recommended that you park safely
or make use of the steering mounted
controls.
Press "Telephone".
Press the keypad tab.
Enter the phone number using the
keypad then press the telephone
button to start the call.
Calling a contact
Press on "Telephone".
OR
Press this steering mounted button to
open the list of contacts.
Select the "Contacts" tab.
Select the desired contact
from the list offered to start
the call.