Jump in punt, on the phone (6)
I believe the answer is:
gambol
'jump' is the definition.
(thesaurus)
'punt on the phone' is the wordplay.
'punt' becomes 'gamble' (I've seen this before).
'on the phone' indicates a 'sounds like' (homophone) clue.
'gamble' sounds like 'GAMBOL'.
'in' is the link.
(Other definitions for gambol that I've seen before include "Spring" , "Frolic, caper" , "Caper and cavort (6)" , "Frisk about and bet, by the sound of it" , "Frisk and play" .)