Internet fax allows users to send faxes via the internet to other internet fax enabled devices, or to an email address.
Device requirements
The fax device or multifunction product (MFP) requires full fax and print functionality, a Network Interface Card (NIC), and connection to a local area network (LAN).
Controlling incoming faxes
Supported MFPs with a GWNX controller can be set to handle faxes in a number of ways via the Output mode switch timer. Depending on the customer’s requirements, faxes can be:
- Printed automatically
- Printed only during a specified time
- Held at the MFP when it’s in standby mode—the fax is printed when the device returns to ready mode
- Locked at the MFP until the user enters their user ID and password to log on
- Forwarded directly to a registered receiver
- Stored on the document server.
The Output mode switch timer supports all received faxes including internet fax and IP fax jobs, mail to print, and the automatic fax report.
The Output switch mode timer can be also configured with regular settings for each day of the week, or for specific periods of time, for example when the office is closed during holiday periods.
Note: If SMTP over SSL encryption is enabled on a MFP with a GW controller, Internet faxes can’t be received because they don’t support SSL encryption.
This function reduces the risk of information leaks and provides the ability to forward faxes to an alternate destination when the recipient is not in the office.
Document security
As an added security feature, when the Output timer is disabled—the default setting—users can manually prevent their received faxes from automatically printing.
This function reduces the risk of information leaks and provides the ability to forward faxes to an alternate destination when the recipient is not in the office. For example, all faxes received on a public holiday can be held on the HDD until released to print by the recipient.

Transmission security
Users can also fax digitally signed PDF/A files using the universal send function.
Note: A digital signature can’t be added when forwarding incoming faxes to an email address.
How does it work?
Internet fax complies with the T.37 standard, and some Ricoh MFPs support T.37 Full Mode. Other devices support T.37 Simple Mode. The main differences are:
Setting | Simple Mode | Full Mode |
---|---|---|
Original size | A4 | A4, A3, B4 |
Resolution | 100 x 200 dpi, 200 x 200 dpi | 100 x 200 dpi 200 x 200 dpi 400 x 400 dpi |
Compression methods | MH | MH, MR, MMR |
T.37 Full Mode also allows delivery confirmation to be received from other Internet fax devices that are T.37 Full Mode compliant. The other fax device’s available settings—for example, paper size, resolution and compression method—are automatically registered in the address book for use next time.
Target customers
Customers that regularly communicate via fax that need to reduce their transmission costs and total cost of ownership (TCO).
For example, a large business customer with an extensive branch network, where each branch is fitted with an Internet fax-enabled device.
Benefits for the customer
- Reduce TCO—sending faxes via the internet saves on transmission costs
- Transmission security—maintain confidential information by sending attachments in PDF/A file format with a digital signature
- Document security—by configuring the Output switch mode timer, incoming faxes can be locked at the device until the authorised user logs on.
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