Sharp FO-4470 Facsimile Operation Manual page 108

Distinctive Ring
In Canada:
1 RING PATTERN 1
2 RING PATTERN 2
3 RING PATTERN 3
RING PATTERN 4
4
RING PATTERN 5
5
STANDARD RING
6
7 OFF SETTING
STOP
4
Press
106
Two short rings
One short, one long, and one short ring
Two short rings and one long ring
Three very short rings
Two very short rings
Your standard (normal) ring pattern
Turn distinctive ring off
repeatedly to return to the date and time display.