CITROËN DS 5 Handbook page 300

Secret - Mute
(so that the caller cannot hear)
In the contextual menu:
- select "Micro OFF" to switch off
the microphone.
- deselect "Micro OFF" to switch
the microphone on.
combined mode
(to leave the vehicle without ending the call)
In the contextual menu:
- select "Telephone mode" to
transfer the call to the telephone.
- deselect "Telephone mode" to
transfer the call to the vehicle.
In certain cases, the combined mode has to
activated from the telephone.
If the contact has been cut off, when you
reconnect on returning to the vehicle,
the Bluetooth connection will be restored
automatically (depending on the compatibility of
the telephone).
Interactive voice response
From the contextual menu, select
"dTMF tones" and confirm to use
the digital keypad to navigate in the
interactive voice response menu.
consultation call
From the contextual menu, select
"Switch" and conform to return to a
call left on hold.