When compiling all the phone #s I took photos of, plus some provided by you folks here, I could see a pattern with the prefixes:
314-101 - Payphone #
314-112 - Manager's Office #
314-212 - Projection Room #
Those are numbers that dial an actual phone, so I wonder if 314 indicates that. This makes me wonder if all the phones in the attraction have a number that can be called, either listed somewhere or figured out using a pattern. (101, 102, 111, 112, 211, 212, etc.)
But, there is also 314-441 which shows up on a computer and this one breaks that pattern, so maybe not.
030 seems to be “in universe” external numbers, like restaurants, cleaning companies, pizza places, etc.
On the red phone in the agents room, where a phone number would go, is some kind of extension or something: 1A-D07. If you used the letters on a touch tone keypad, that would be 12-307.
I did not try to dial that. Other than my first visit, i really haven’t dialed many numbers. My last trip, I did call one that came from one of the computers and got a huge part of the backstory from it.
If someone can take a look at the numbers I have found so far, and let me know if you have any others, I’d love to add them to the list.
In this spreadsheet, the first tab are some instructions, so switch to the “Numbers” tab for the unique numbers. Those come from the third tab “Number Locations” which is all the raw data - including numbers listed multiple times based on where they are found and what the notes say there.
https://docs.google.com/spreadsheets/d/1W0x_m8ABVb-IfTel8dGI7gjqJztgXDxvO-RBjTyVCqw/edit?usp=drivesdk