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Since I don't quite understand the question, I'll reply with:
DSL can be wired in one of two ways:
Filters
One is used on every location BUT the DSL modem. You cannot have more than 5.
Splitter
Only one is used. It is typically installed at the NID outside. Us experts usually like using the highest pair for the DSL modem.
That pair is wired to one location where the DSL modem goes. The blue/wht, wht/blu pair is still line 1.