reply to XCOM
Re: Networking Ideas Questions for a Retro Build. What kind of punch? I wouldn't recommend a 66-block for ethernet. They aren't rated for such high frequencies.
* Granted, I ran a single ethernet (100M) across a telco CO using the existing T1 smartjacks. (those are wirewrap! and yes, they were tagged out so people couldn't plug bantum jacks into them.) It worked, but it was the only one on that 50 pair. And likely the only thing on it most of the time -- it was a span to bring test circuits up the NOC, where they had the SS7 diag terminal.