The most common and most likely answer to this crossword clue is the 6 letter word PEALED
P
E
A
L
E
D
Buddy explains!

The straight part
We know that "Rang the bell" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case rang the bell = pealed.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does PEALED mean?
PEALED verb- To sound with a peal or peals.
- To utter or sound loudly.
- To assail with noise.
- To resound; to echo.
- To pour out.
- To appeal.