GateWay Fax Systems is dedicated to manufacturing the best and most complete line of Secure Fax products for use with the STE, STU-III, STU-IIB as well many other cryptographic devices. Additionally, we offer Free technical support and one-year warranties. As the manufacturer of the lowest-cost secure fax product, the Easy-Fax 90si Secure Fax Gateway, we can save you thousands of dollars per secure fax!