In article ,
Jud McCranie wrote:

One more question: does it matter if the positive voltage goes to the
red or green wire in the jack?

Probably not. Only the very old Western Electric Touchtonetm sets required
proper polarity. If the polarity is reversed, these increasingly scarce
telephones can receive calls and be talked on but their keys will not sound
when depressed.

Can it go either way, or is there a certain way it should go?

Color to color is the proper technique.

If the pair's polarity is reversed somewhere in the line before it enters the
premise, you can correct the polarity at the interface. All wiring beyond
should conform to the standard: green/red or white/blue should go to the
greed/red terminals on the jack. Black/yellow or white/orange should go to
the black/yellow terminals.

If connecting a block at a tap point (a loop in a loop-wired installation) be
sure to also splice the pairs "through". IOW, make a three-way connection to
the pair at the location to feed that jack, making sure to splice-through
extra/unused matching pairs.
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JR