High level history
11/28/2012 summary from Unifiction forum; original source at 
How we got here
In September 2012 a strange phone number(303-309-0004, out of Colorado) gained attention when it was posted on an anonymous forum. A group quickly gathered to work on the codes and messages received. The project came to be known as OTP22,in reference to OTP being said in the first phone messages. Since then, there have been several stages with different types of codes, an automated agent system, four different phone numbers, SSTV images, and even a live person. Currently, we appear to be receiving messages intended for an "Agent Bourges". We have also noticed that sometimes we can reach a Message Desk with a live person who, when given a positive integer, will reply with another number, a town name, and even, once, an encoded message in NATO alphabet.
Initially, the phone number asked for "Agent Codes". After finding a valid code, the system would recite a long series of 2-digit numbers. The phone messages were decoded and found to mention GPS coordinates for locations labelled "TROOP", "AGENT", "SHIP", etc. Over observation, a ship convoy appeared to be heading north toward through the Bering Strait and toward Svalbard despite complications when a "MIG BOGEY" appeared.
Information about a drop in Oregon lead to the recovery of a CD with tools to solve a new type of code, a series of letters given in NATO alphabet and frequently seperated into 5 letter sections. Another dead drop was found at a phone booth in Maine, and its contents led to the discovery of a third drop in Minnesota.The third drop was simply an index card, in a plastic bag, with the phone number 709 700 0122.
A strange series of chirps and tones on the 709 number were decoded to be information on a series of 6 drops across the world. Drops in California, Rhode Island, and Finland were successfully recovered and consisted of a set of strange metal parts in a sealed bag. The drop in Bellwood, Chicago, eventually yielded a broken CD and a strip of paper with "97 BA 16041-97 BA 16241".
At around the same time as the 709 number was found, the coordinates system shut down. The 202 and 303 numbers started giving strange "horn" tones instead. After several days the "horns" were decoded and revealed yet another phone number, this one in Poland. The Poland number asked for a "Bell Agent Code" in order to "reactivate the system". Finally, this was deduced to be "97BA16041", and we were informed that system reactivation was immanent . All three US numbers switched to strange recordings which sound like encrypted conversations. We have yet to solve them.
Promptly, the 202 and 303 numbers were switched back to the original agent system. However, old codes were no longer accepted. Using code 16041, we were given a binary tone, much like the ones on the 709 number, welcoming "Agent Ai Bourges" back and informing her that the assignment had been cancelled. The newest agent system is more organized than the original, with a "Directory" which gives agent codes to use in order to access "AiBourges", "AgentInstructions", and "Upload". We are monitoring all of these for changes.
The most recent development is the Message Desk, which the 202, 303, and +42 numbers sometimes directly forward to. Sometimes it can also be accessed using agent codes #16044 or #16244. At the other end of the line, a live person answers "Message Desk" and prompts you for a number. He will respond with another number, a town name, and occasionally something else. The message desk has been up for a few hours every night since we discovered it on 11/23, but the times have varied greatly. We continue to try numbers and record responses.