A 'twisted UTP' cable is used if you want to connect two PC's (or other equimpent like the Empeg) together without using a HUB which is used when you have more than 2 PC's (or other equimpent like the Empeg).

I think your problem is that you don't use a 'Twisted UTP' cable which is needed
if you don't have a HUB.

Regrads
TommyE