Can a 6 pin DSL plug be replaced by a 4 pin phone plug?

Thanks in advance for any insight on this.

Background: We have Uverse internet/TV at our house. When the tech initially installed the line, they ran a "home run" straight from the box that terminates with a male end (6-pin DSL plug)  that was drilled up through the floor and plugged into the modem, instead of installing a jack in the wall with a female connection.

Yesterday I rerouted the line in my house so that I could move the TV/modem from the living room to the family room. In order to be able to pull the line through a few small holes going into and out of the crawl space, I removed the 6 pin dsl plug on the end by snipping the cable. I rerouted the line where it needed to go, making sure not to damage it as I secured it along the ceiling in the garage and through the wall in the family room. I did not need to unplug it from the phone box on the side of the house or mess with that end at all. 

Once i was done with that, I went to an electronics store to buy a new plug and all they had was standard 4 pin plugs, but said it should work. I went ahead and crimped a head on with the 2 dsl wires that were used in the originial head (green and white) attached into the 2 middle leads. Now I am not able to get a dsl signal on the modem (flashing red light on broadband blinker on modem). I tried 5 different times with the 2 wires flip flopped in the same ports with no luck. Could it be that the different head is the problem? I am quite certain that the issue is with this new connection but am not sure.

Thanks again