I have purchased Sharp Fax machine Model FO-P610 recently,my problem is since I have only only one telephone incoming line,I did the connection of the output telephone set of the fax to my PC wireless modem.What I have encountered was when i send a documents and after i press the START BUTTON, the machines indicates "MEMORY TX" because of that i can't send files...what should be the possible solution of this problem.... Thank you for your immediate response....