Phone keys on radio panel, what means?
 

Hi all....

I recently build a Ford Focus 1.6 TDCI S.W., that's bouyanced with original Ford-Sony Mp3 CD player....

this device has twoo phone keys on his panel, one green (call up) and one red (call out), then a numeric key with "*" and "#"....

When I seen it i thought that's a bluetooth device, linkable to my smartphone, but probabily I was wrong 'cause after an accuracy inspection I didn't seen bluetooth symbol....

then I thougth this radio should have a sim card accomodation, but nothing.... I seek for a cable too, but nothing yet....

So.... does exist a linking system between this radio and a hand-phone? I readln all the users manual, but there are writed nothing about this keys....

Can someone help me?


Excuse me for my bad english ("Italenglish")....

Thanks.