Pressed a doorbell (4)
I believe the answer is:
rang
'pressed a doorbell' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for rang that I've seen before include "Phoned; did resound" , "Phoned; reverberated" , "Telephoned" , "Made a phone call" , "Made tolling sound or phoned" .)