Dell 962 All In One Photo Printer - Manual (Page 18)

From this Advanced
Fax option: You can select:
Redial Attempts The number of times you want the machine to try again if your fax does not go
through:
0 times
1 time
2 times (default)
3 times
4 times
5 times
Redial Interval The time the machine waits before attempting a fax call again:
1 minute
2 minutes