
1) Rooms
Found on
https://www.crosswordclues.com/clue/wiring-closet

A wiring closet is a small room commonly found in institutional buildings, such as schools and offices, where electrical connections are made. While they are used for many purposes, their most common use is for computer networking. Many types of network connections place limits on the distance between end user equipment, such as personal computers...
Found on
http://en.wikipedia.org/wiki/Wiring_closet

(NETWORK GLOSSARY) Specially designed room used for wiring data and voice networks. Wiring closets serve as a central junction point for wiring and wiring equipment that is used for interconnecting devices.
Found on
https://www.encyclo.co.uk/local/20479

In wiring for telephone or data systems, any location from which the communication wires emanate, usually enclosed.
Found on
https://www.encyclo.co.uk/local/22803
No exact match found.