Call man who invented telephone (4)
I believe the answer is:
bell
'call' is the definition.
(bell can mean a phone call)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for bell that I've seen before include "Alternative to knocker" , "''The ... Jar'' (Sylvia Plath)" , "Metal ringer" , "Metal instrument" , "Ringing device" .)