I am preparing for DSL, and have just added a Corning DSL pots splitter where my service enters the house. The splitter has a Voice and a Data output. The incoming went to the Network terminals. The existing house phone wiring went to the Voice, and, from the Data terminals, I ran a separate phone wire to a jack by my computer. Then, to see its effects, I plugged in my modem (56k)to that DSL jack.
Here is where the confusion arises. My computer modem actually connected to my ISP at a slower speed than before. I did not expect that result. I tried dialing over and over. When I plugged it back into the normal (original) phone jack, it returned to its previous 'fast' speed. Then, to prove my cable run was OK, I reconnected the new DSL cable also to the Voice terminals at the splitter. Presto - my speed was back on that DSL jack. Thus, using the Data output caused the slow down. What will happen when high speed DSL is connected? Any ideas? Thanks.