Highline telephone controls

[stevenkeyte]

My facelift Contemporary SE is fitted with a highline sat nav and the optional telephone control / cradle assembly fitted into the slot usually occupied by the passenger side cup holder.
When a compatible mobile is fitted into the cradle (Nokia 6310i) the phone appears to recognise the hands free set-up (small car icon appears on the phone screen) but the highline doesn't seem to detect the presence of the phone.
According to the factory instructions which came with the car, there should be a telephone option available on the menu screen of the highline, which is selectable once a phone is inserted in the cradle, but the telephone option isn't displayed, either in black (and un-selectable when no phone is inserted) or highlighted and selectable once the phone is inserted.
Does anyone have experience of this set-up and potential issues / faults which may be causing the highline not to detect the phone hands-free set-up?
All other functions of the highline system work OK.
Regards,

Steve