Dial up a number, and see who answers. Space or hit the book to toggle a phone book containing phone numbers you can try. More numbers will be added soon! Remember to refer to the phone book if you're stuck!
The reason I chose a 3390 specifically is that I apparently have a gold 3390 in my house. I say apparently because I found it, and didn't know it was in my house. Uberduck.ai for various pickups.
