DB25 Male to RJ12 (6 Wire) Modular Adapter Gray.

Using Modular Adapters with inexpensive silver satin or flat oval twisted pair wire has become a standard way to run a serial connection over a long distance. You can use this modular adapter to connect dump terminals, PC's and telecom equipment to serial devices. Slotted thumbscrews make installation fast and easy.

RJ12 Pinout

Pin1 -- Blue
Pin2 -- Yellow
Pin3 -- Green
Pin4 -- Red
Pin5 -- Black
Pin6 -- White