This is actually an old picture, month or so ago as I was cleaning up Ugly to current standards. Ugly was the light blue 3Com switch sitting on a wire rack supported by cheap metal shelf brackets between two half racks of KeyTelephoneSystem cards.
The swing gate has been mounted high, the working switch mounted, and the new Cisco switch also trial mounted to check clearances. Below the rack you can see the KTS panel, which was removed a week later after I cut everybody off and onto slightly more modern telephones.
After removing the KTS the rack was lowered so that the fiber patch panel, mounted on the wall to the right of the rack as you look at it, would be able to open. The second Cisco was mounted, both Ciscos connected by fiber to each other and to the new LAN on the 2nd floor. Users were migrated from the old to the new and the 3Com removed.
The problem now was that the swing gate could not be swung open -- the LAN cables were run to the left as you look at the rack. Which meant that I needed to re-terminate all of those connections to a patch panel mounted in the rack. Which takes us to the next entry.....