I am in the process of wiring my house with Cat5e cable. The problem is that the 3/4 inch pvc pipe that carries all the cables (Phone,CATV,Data) has space left for only two more cables and I have four bedrooms I want to provide network/internet. Since ethernet only uses 2 out of 4 pairs of wires in the cable can I use the remaining two for another connection. What I was thinking was two terminate the long run of cable with jacks at each end, and to the jacks attach a connector that is crimped with two cable instead of one (keeping in mind the proper crimping for both connections) . I read somewhere that the maximum untwist length permitted for Cat5e was half and inch. That could become a problem when im crimping two cables in the same rj45 connector, but I dont think it is much of and issue. Th issue i am most concerned with is crosstalk between the two ethernet connections on the same cable. I also read somewhere (have link at home) that there is and adapter made by ATS? that does what I want but is not Cat5e rated? What do guys think?