No communication between the ESC and reciever

Hi all, I’m hoping to get some assistance with an issue I have. I have a Flycolor flydragon 150 ESC. I have connected a 5v BEC to the supply battery and the receiver has paired with my maytech remote but the issue is, I don’t know how to get communication from the receiver to the ESC(I’m guessing it’s the black-and-white cable from ESC) I have tried all channels on the receiver. I’m getting quite a loud beep from the motor every 4 or so seconds. Does anyone have any tips?