GateWay Fax Systems, inc. Model 90si Secure Fax Gateway User's Guide
www.gwfs.com, 877-951-9800, info@gwfs.com help line: 877-951-9814 page 16
3.0 Using your 90si3.1 Applying Power
The Easy-Fax 90si STU-III Gateway uses an external power supply. Since the 90si has no ON/OFF switch, the
device is “on” as soon as power is applied. To confirm that the 90si is properly powered and ready to operate,
ensure that the Green "POWER" light is illuminated and that the Red "FAULT" indicator is extinguished.
3.2 Sending a Secure Fax
Use the following, generic, procedure to send a secure fax. You may want to make a version for your secure phone
and COTS fax that references the appropriate details.
Step Procedure
1. Place a call on your secure telephone / crypto.
2. Place it in secure data mode and set the handset on the table
3. Load your document in the facsimile
4. Take the fax machine "off-hook", dial a "1" and press the big Start or Sent button
(this will use the default transmit protocol)
5. The fax will begin sending pages, one at a time, and will indicate when it's done,
usually with a beep.
6. When the fax is done, you may return the call to Secure or Clear Voice or discon-
nect.
Off-Hook
Most fax machines have a button that when depressed, returns dial-tone from the telephone system. This button is
often labled Hook, Manual Dial, Monitor, On Hook Dial or something to that effect. If your fax only has a handset
lift it off-hook, dial a "1" and press the Start button and then hang it back in its' cradle. If your fax does not have a
handset or a hook button (many HP faxes don't) simply eliminate this step (i.e. use 1, Start).
Secure/Non-Secure Differentiation
Secure faxes are always initiated from the secure phone / crypto and then the secure phone is placed in secure data
mode for the duration of the secure fax tansmission. The 90si will not allow public faxes to be initiated from the
secure phone / crypto.
3.3 Receiving a Secure Fax
Important: Your commercial fax device MUST be set to auto-receive as a fax for your 90si system to work
properly. Additionally, make sure that your fax is set to auto-answer on the fewest number of rings it will allow.
Ideally one or two rings. (See your faxes manual).
Step Procedure
1. Answer the incoming call on your secure telephone
2. Place it in secure data mode (either end may do this)
3. Standby, the fax will be received automatically
4. When the fax is done, you may return the call to Secure or Clear Voice or disconnect