Brother fax machine model no.2820: what is the

brother fax machine model no.2820: what is the meaning show on the screen :Fax in Momory:60, always the fax cannot get through, how to clear memory for outgoing fax ? seems like the failed outgoing fax all stuck in the momory ? 1 more need to confirm is each document the machine will try 3 times to do fax out, if failed 3 times, then machine will automatic clear this document in the machine or not?