Ricoh Aficio MP 161SPF - Manual (Page 274)

Registering Addresses and Users for Facsimile/Scanner Functions
266
7
Searching by Registration Number
Search the address book using the registration number of a user or destination.
A
Press [Search].
B
Select [Search by Registration No.] using {U} or {T}, and then press the {OK}
key.
C
Enter the registration number you want to search for using the number
keys, and then press the {OK} key.
D
Select the name using {U} or {T}, then confirm it by pressing {V}, and then
press the {OK} key.