13 Appendix13-6 Network FaxAppendix Chapter 1313.3 Internet Fax TerminologyTerms used in general for the Internet Fax transmission are described below.Alphabet Terms DescriptionD DSN (Delivery Sta-tus Notifications)A message to notify the transmitting side of the deliverystatus when a mail arrives at the mail server on the receiv-ing side.I Internet Fax A type of transmission that the original read through the in-tranet (in-house network) or internet is transmitted or re-ceived as a document attached to an E-mail (TIFF format)between the Internet Faxes or computers.M MDN (Message Dis-position Notifica-tions)A message to confirm disposition which is sent upon re-quest from the transmission side.P POP3 (Post OfficeProtocol - Version 3)One of transmission protocols (transmission rules) usedgenerally for E-mail transmission. Mail box authentication,check of mail download or list information, mail deletionand other functions are provided.S SMTP (Simple MailTransfer Protocol)One of transmission protocols (transmission rules) usedgenerally for E-mail transmission.