Ricoh Aficio MP 161SPF - Manual (Page 184)

Registering Addresses and Users for Facsimile/Scanner Functions
176
7
F
Press the {OK} key.
G
Press [Details].
H
Select [Fax Settings] using {U} or {T}, and then press the {OK} key.
I
Press the {Clear/Stop} key to delete the fax number, then press the {OK} key.
J
Press [End].
K
Press the {OK} key.