More Portal Mortal

Read the quote below to get an idea what is going on.

From what I'm reading they updated Portal and put radios in the game. When you bring them to certain locations, they each play a sound file. Some of the sound files were morse code and translated into messages. The rest of them were converted to images using SSTV. After pulling numbers and letters from the images, an MD5 hash was put together. Someone guessed it was a phone number and encoded all the phone numbers with the valve area code using MD5. One is a match. This number turns out to be a BBS number that you can dial into with your modem. The login is what you see when dialing in.