Finally solved this problem.
It turns out that my house has two lines wired instead of just one. By
shear coincidence, all the cordless phones were pluged in to the line 2
and all the corded phones were plugged into line 1.
I was not aware of the two lines. So, when I disconneted my house from
the phone company, I just wired back line 1 and didn't bother with 2 or
3. The solution was to wire all the "left" sides of the twisted pairs
together and all of the "right" sides together which, of course,
completed the circuit and fixed the problem.
Just for reference:
Phone line color decode
Red, Green - Line1
Yellow, Black - Line 2
Blue, White - Line 3
I wired RED YELLOW and BLUE together on one side and GREEN BLACK and
WHITE together on the other side.
I hope this post helps someone in the future!
Johnny
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