Ascend Archive
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Re: (ASCEND) Pinouts on P75 "WAN" jack



> Thanks for the info, I neglected to ask if the pair were polarity specific.
> I know polarity of an analog phone line is not too important, but I'm guessing
> the polarity of ISDN is.  If it is important, how dangerous is it if the
> polarity is wired incorrect?

That information is unknown to me, and I've certainly done a lot of patching
ISDN lines in BIX racks and custom cables.

Since I've never had a problem, then I must conclude that either:

- It doesn't matter
- I've been lucky every time.

I suspect it doesn't matter.

-Phil
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