1) Carillonneur 2) Salvation Army volunteer 3) Salvation Army worker 
A bell-ringer is a person who rings, tolls or peals a large bell, usually a church bell, by tugging on a long rope. Since the invention of the carillon, the need for bell ringers has declined. Also some churches have replaced bell-ringing altogether with a loudspeaker that plays bell music from a computer or music player. The profession saw specta...
Bell-ringer is American slang for a great success.
[n] - someone who plays musical handbells 2. [n] - something that exactly succeeds in achieving its goal
noun something that exactly succeeds in achieving its goal; `the new advertising campaign was a bell ringer`; `scored a bull`s eye`; `hit the mark`; `the president`s speech was a home run`