The document describes using ReaVerbate to add echo to recorded sound, making it sound as if played in a large room. It then mentions using Lost Technology to transform the effect into a sound similar to an old-fashioned phone ringing.
1. Using ReaVerbate I used the roomsize
tool to give my sound an echo like it
was being played in a large room.
Using Lost Technology I changed
my effect into a sound that
sounds similar to an old
fashioned phone ringing.