Bluetooth phone calls iPhone 6

I have an iPhone 6 and I'm having trouble making phone calls on my 05 TL Bluetooth I can accept calls fine on the Bluetooth but when I try calling someone I can't get the phone call to connect to the cars Bluetooth is there a conman I should be using

Looked for a previous thread but couldn't find any and just joined acurazine 1st thread and just bought 05 Acura tl