Ricoh Aficio MP C4500 Facsimile Reference Manual page 117

C
Press [Option Setting].
D
Press [SUB Code Transmission].
E
Press [OK] twice.
The standby display appears.
F
Enter the fax number of a destination or an IP-Fax destination.
G
Press [Adv.Features].
H
Make sure that [SUB Code] is selected.
I
Press [Transmission SUB Code].
Advanced Features
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