Canon iR3245 Manual page 464

Remark
You can use the Confidential Fax Inbox function for
receiving and storing I-fax documents only if the
optional Color Universal Send Kit is activated.
You can use the Confidential Fax Inbox function for
receiving and storing fax documents only if the optional
Super G3 FAX Board is installed.
Confidential Fax Inboxes are available only if the
optional Color Universal Send Kit is activated, or if the
optional Super G3 FAX Board is installed.
6
6-12 Confidential Fax Inboxes
In order to use a Confidential Fax Inbox, it is necessary
to first register the Confidential Fax Inbox as a
forwarding destination in Forwarding Settings in
System Settings (from the Additional Functions
screen). (See the Sending and Facsimile Guide.)
It is necessary to inform the other party of the
forwarding conditions beforehand.