120Important InformationYour machine uses the same communication protocols as email: the Simple Mail Transfer Protocol (SMTP).The differences from a standard G3 fax communication using the Public Telephone Network (PSTN) are asfollows.Differences between Internet Fax and Regular FaxA regular Fax machine goes off-hook, dials, and the phone network completes a circuit over phone lines tothe receiving fax. You pay for the circuit. The two faxes negotiate a connection, synchronize and exchangeimage data.The Internet Fax works like an email, the image data is broken down into packets and transmitted throughyour Local Area Network (LAN) to the Internet or Intranet instead of using a telephone company’s network,thus saving you long distance costs.Transmitted Document Confirmation1. Your machine does not directly connect to the final destination (see note below), but rather connects to aMail Server via LAN. Therefore, if a document cannot be correctly transmitted due to an error, theerroneous mail may be returned from the Mail Server to your machine.2. The erroneous mail may take a long time to return (20 to 30 minutes) depending on the destinationlocation, traffic on the network or LAN system configuration.3. Depending on the Mail Server, it is also possible that erroneous mail is not returned at all. Therefore,when transmitting important or time sensitive documents, it is recommended that you follow up with atelephone call to confirm reception.4. Documents cannot be transmitted correctly if the destination Mail Server does not conform to the MIMEprotocol. Erroneous mail may not be returned depending on the Mail Server.Note:1) Fax Parameter 172 (DIRECT IFAX XMT), if set to "Valid," allows you to configure Address Book so thatyou can directly send to the destination without medium of SMTP.2) Your machine supports the Delivery Notice feature (See page 197).Your machine Cannot Make a Phone Call via LANYour machine can only make a phone call using a regular telephone line (PSTN).Dual Port CommunicationYour machine's dual port capability, allows simultaneous G3 Fax Communication over regular telephone line(PSTN) and LAN Communication.Transmission ResolutionIn view of PC transmission, the factory default setting for the resolution is set to FINE mode. If required, thissetting can be changed to Normal.Internet Mail Reception1. Your machine can receive text email from a PC and print ANSI characters. It will print a "❚" symbol if anunrecognized character is received.2. Received email font and character size are fixed and cannot be changed.3. Text email will be printed at about 72 lines per page. It is recommended that you use A4/Letter sizerecording paper.4. If the received text email includes a file attachment in a format other than TIFF-F, such as PDF, Word,Excel, Power Point, your machine prints an error message instead.5. If the received email includes attached TIFF-F formatted image files, the text and TIFF-F formatted imagefile will be printed on separate pages.