For everybody who wants to see the page remain but hasn't updated it, this is your one-week warning.
This page hasn't been edited since December 2017. If it hasn't been edited by May the Fourth, 2018 (not just a quick formatting change, but some actual work at making the page document ATT's infrastructure), then I'm hitting the Delete button.
The work doesn't need to be completed by May 4, but if nobody's even started the work, I'll take that as an indication that nobody wants to do the work.