Rang aloud and had effect (4)
I believe the answer is:
told
'had effect' is the definition.
(I've seen this in another clue)
'rang aloud' is the wordplay.
'rang' becomes 'tolled' (tolling is a kind of ringing).
'aloud' shows a homophone (sound like).
'tolled' sounds like 'TOLD'.
'and' acts as a link.
(Other definitions for told that I've seen before include "Authorised - broadcast" , "Said" , "instructed" , "Produced effect; related" , "Made an impact" .)