(2 days later) What an embarrassingly dumb question: Using 2 AIUs pretty far apart

Walt,

 I'm wondering if this would work: use one of those phone line "splitters" that allows for one floor jack to be output to 2 corded phones.  I would put that in the TIU and then run separate connecting cables to each AIU. 

Sorry, that just won't work. The AIUs must be daisy chained. 

I have my first AIU directly under the TIU.  I come off TIU 1 with a cable 35 feet long and connect to TIUs 2,3 and 4.  Everything works perfectly.  

As soon as I left the library and got home I thought "What a STUPID question"!!!!  I'm somewhat embarrassed.  Not somewhat, very.

After having programmed my 2 AIUs for multiple years now I should have known that they have to be daisy chained since you have to identify which AIU you are programming a port for.  Shame on me!

Plus, I was thinking, wouldn't the cord that fits a wall-jack for a phone be the wrong cord???  I know the one from the TIU to the remote has to be the one that would connect the phone to the receiver so I would assume it would have to be the same for the AIUs too.

Sorry that I wasted your time, but thanks Barry and Marty for being kind and not ripping me to shreds (like you surely could have ) in your replies!

- walt