Called in November stopping student event (4)
I believe the answer is:
rang
'called' is the definition.
(called on the phone)
'november stopping student event' is the wordplay.
'november' becomes 'N' (phonetic alphabet: alpha, bravo, charlie etc.).
'stopping' means one lot of letters goes inside another (inserted letters stop or plug a gap).
'student event' becomes 'rag' (I've seen this before).
'n' placed into 'rag' is 'RANG'.
'in' is the link.
(Other definitions for rang that I've seen before include "(Of bell) sounded" , "Telephoned" , "Phoned; did resound" , "Made a phone call" , "Called" .)