Samsung HF4000 User Manual page 14

For some phones, pressing the Talk button opens the call log list. Press
the Talk button again to dial the selected number.
Dialing a number by voice
Press the Talk button and say a name. You can dial a number of the first phone.
Dialing speed dials stored on your phone
Use the voice command ""Call1" , "Call2" or "Call3."
recognizes up to three speed dial numbers that are saved in your phone.
Answering a call
-Press the Talk button to answer a call when you hear incoming call tones.
-You can also say "Answer" when you hear "Call from [phone number] Say yes or
ignore"
Ending a call
Press the Talk button to end a call.
Rejecting a call
-When a call comes in, press and hold the Talk button to reject a call.
-You can also just say "Ignore" when you hear "Call from [phone number] Say yes
or ignore"
When two calls from the two connected phones come in, you can reject the call of the
first phone.
Your hands-free car kit