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# Internet Fax Transmission Overview

You can send faxes over the Internet. When you send faxes to Internet Fax destinations, the machine converts scanned images to TIFF-F format files and send them as attachments to e-mail.

- The level of security for Internet communications is low. It is recommended that you use the telephone network for confidential communications.

- Internet Fax delivery might be delayed due to network congestion. Use a public telephone line if the fax needs to be delivered in a timely manner.

- The Internet Fax function supported by this machine is compliant with ITU-T Recommendation T.37 (Simple Mode).

- To use the Internet Fax function, network settings must be configured properly.

- Internet Fax transmission may take some time before it starts. The machine needs a certain amount of time to convert data in memory prior to transmission.

- Depending on e-mail environment conditions, you may not be able to fax large images.

- The `“Photo”` resolution is not available for Internet Faxes. Faxes will be sent using `“Detail”` resolution if `“Photo”` resolution has been specified.

- If the faxes are received on a computer, a viewer application needs to be installed in order to view the documents.

- For details about network settings, see Configuring the Network Settings.