If you store a monochrome document in the printer in advance, the stored document can be sent upon request from another fax machine that has a polling receive feature. There is one Polling Send box and 10 bulletin board boxes in the printer for this feature. In each box, you can store one document with up to 200 pages. To use a bulletin board box, the one box to store a document must be registered beforehand, and the fax machine of the recipient must support the subaddress/password feature.