Speak of the devil.
I think the primary reason is the phone is using the ethernet jack as its power supply instead of a wall wart. This way, when a fire (in a chemistry department, a significant concern) takes out the power, I can't call 911, and also precludes a conventional ethernet switch. This is called progress.
Comon now- actually your phone will probably stay up during a power outage, because the switches should be on a UPS designed to stay up during power outages and catastrophic events.
Nothing is going to work forever in a fire, but units powering emergency services need to be identified and given special treatment.
I have UPS power from my computer room runnkng to evry floor of our building just to power the switches that power the phones. Makes 911 service available even during a power outage, which is usually when someone needs 911.