Retry basically means IF the first callback attempt was unsuccessful, then [True] the system conducts another callback attempt or [False] the system doesn't conduct another callback attempt which then, ends the callback event.
As for "attemp1 ewt=47 reason=noresponse"...
attemp1 stands for Attempt #1
ewt=47 stands for Estimated Wait Time = 47sec (unlikely 47min but that depends on your call volume, how you handle callbacks over queued calls and how many agents answer calls).
reason=noresponse, which is kinda self explanatory... a callback attempt was conducted but no one answered (no response). The callback attempt likely went to voicemail and perhaps you guys play a prompt, "please press any key to accept this callback request". Obviously, the voicemail system doesn't respond so the callback service fails due to - no response.
v/r,
Mark
