Connecting BF3 phone and uni-box

[Slavonac]

I have on my uni-box gnd - rx - tx and i ve got on my BF3 phone 1,2,3 -GND , 4 -RX , 5 -TX , i connect phone gnd 1,2,3, and rx on 4 and tx on 5 , i dont know does phone must be - ON or OFF , but doesnt work

maybe my uni-box schema doesnt work , so if someone have good schema for connect that phone with uni-box please send me on my mail

Thanks

josipmihaljic@inet.hr