Ça doit être ça :

Code:
timeoutrestart

; If timeoutrestart is set to yes, then the time out for an agent to answer is reset if a BUSY or CONGESTION is received. 
; This can be useful if agents are able to cancel a call with reject or similar. 
;(I found that when agents return NOANSWER (ring, no-answer) this also causes the queue to move to the next agent in a round robin) 
;timeoutrestart = yes
Donc si tu le mets à yes ça devrait le faire.