GateWay Fax Systems 90SI Primary Secure Fax, Primary Non-Secure Fax, Protocol, Public Fax, RS-232

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Primary Secure Fax

For the purposes of this document, a Primary Secure Fax is any secure fax system employing the 90si Secure Fax Gateway

Primary Non-Secure Fax

For the purposes of this document, a Primary Non-Secure Fax is a COTS fax connested to a 90si based system that can automoatically answer incoming non-secure fax call, just like all the other unclassified faxes you are familiar with.

Protocol

Generally, a protocol is a set of standard rules used to send data over a communications channel. Specifically, secure faxes employ a number of protocols including Mil-Std-188- 161 / STANAG 5000, SCIP Async and some older secure fax protocols referred to Modified Group 3.

PSTN

An acronym for Public Switched Telephone Network, it refers to the commercial telephone systems that carry the vast majority of non-mo- bile telephone calls worldwide.

Public Fax

A document that does not contain sensitive or secret information and, therefore, need not be transmitted in a secure manner.

Red Data Port

The term Red Data Port refers to the RS-232 serial interface on the crypto device to which the 90si's "STE" cable connects. It is also re- ferred to simply as Data Port.

Ricoh / Compatibility Protocols

A set of digital protocols for communication between secure fax devices. These protocols allow the 90si to be backwards compatible with older secure fax machines. Also referred to as Modified Group 3.

RS-232

Recommended Standard 232 is an industry standard for the electrical interface between communications equipment (such as the STE) and communications terminals (such as the

Model 90si Secure Fax Gateway User's Guide

90si).

SCCP

An acronym for Skinny Call Control Protocol which specifies how an IP telephone instrument connects to and operates with a Cisco Systems VoIP call router.

SCIP

Secure Communications Interoperability Pro- tocol (SCIP) is a new US, Allied and NATO cryptographic architecture that is employed i new Secure Telephones such as the STE/ECC.

SCIP Asynchronous Protocol

Commonly called the Async protocol, this rela- tively unused secure fax protocol has become the defacto standard due to the switch from KOV-14 crypto cards to the new KSV-21.

SDD (Secure Data Device)

An SDD is a data only version of secure tele- phone.

Secondary Fax

Secure Data Mode

A STU-III or STE’s secure data mode encrypts confidential or classified information to be transmitted and received over standard tele- phone lines. It is this mode that secure faxes are transmitted using.

Secure Fax

A secure fax is a document that contains con- fidential or classified information that must be transmitted in a secure manner. This term is alternately used to describe the equipment used to transmit and receive classified documents. See Secure Fax Device below.

Secure Fax Device

A specially manufactured fax device that includes the interface and protocols necessary to communicate over secure telephones such as the STU-III.

Secure Only Configuration

This simplest of the 90si configurations allows the attached fax to function as a secure fax and only as a secure fax.

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