ASYNCHRONOUS TRANSFER MODE (ATM) TECHNOLOGY INITIATIVES IN THE DEPARTMENT OF DEFENSE (DoD)The following performance parameters can be expected from the various DISN transport systems: The transmission infrastructures would be consolidated by converting all service and agency multiplexor networks to the same hardware base, the NET IDNX. https://en.wikipedia.org/wiki/Defense_Information_Systems_Agency Enabling technologies such as ATM can overcome the limitations of the existing "stovepipe" systems while improving the overall quality of service. DISA mission partners require dedicated point-to-point layer 1 and layer 2 circuits because of the inherent simplicity and security. On Dec. 20, 2005, the GIG-BE program achieved the milestone of full operational capability at all of the almost 100 Joint Staff approved sites.http://www.disa.mil/About/Our-History/2000s#gigThe DISN provides the following multiple networking services:http://www.state.sgov.gov/p/wha/mexicocityThe DISN end-to-end infrastructure is composed of three major segments:Dedicated service is a private-line-transport service that provides point-to-point connectivity to mission partner locations. Furthermore, ATM supports data bursting for sudden, unexpected bandwidth requirements. It is an information transfer utility designed to provide dedicated point-to-point, switched voice and data, imagery, and video teleconferencing services. ATM is standardized for use in the local area network (LAN), metropolitan area network (MAN), and wide area network (WAN). Bulk encryption devices, such as the KG-189, KG-95, KG-194, etc., approved by either the National Institute for Standards and Technology (NIST) or the National Security Agency (NSA) are used as point to point bulk encryption devices. Defense Information Systems Network refers to the integrated network, centrally managed and configured by the Defense Information Systems Agency to provide dedicated point-topoint, switched voice and data, imagery, and video teleconferencing services for all Department of Defense activities.Also called DISN. FEC can be applied at the Physical Layer or at the ATM Layer. Transmission delay of any circuit is the transit time of the transmitted information between the end points of the circuit. Bit Count Integrity is defined as the preservation of the number of bits transmitted in an interval of time. The period of unavailable time terminates when the BER in each second is better than 10-3 for a period of ten consecutive seconds. This program remains to this day the core of the services provided by DISA to serve the United States. They are geographically oriented with several centers dispersed across the United States, a center located at the DISA European facilities to cover Europe, and another located at the DISA Pacific facilities to cover the Pacific assets. To satisfy this demand, Dedicated services are currently offered and are available in a variety of bit-rates and interfaces.A variety of networks operating in special security domains handle classified information in the United States or sensitive but unclassified information, while other specialized networks are reserved specifically for unclassified use by the same agencies. This Defense Information Systems Network (DISN) Connection Process Guide (CPG) (ref am) uses the information contained in references (a) through (an) to implement the requirement identified in Department of Defense Instruction (DoDI) 8500.01 Cybersecurity(ref a) for the Director, Defense Information Systems Agency (DISA), to oversee and maintain the connection … The Defense Information System Network provides a wide range of information services to DOD users, including voice telephony, formal messaging, data networking and video. This encryption device is typically installed as part of the CLASSIFIED DISN SDN, on the trunk side of the CLASSIFIED DISN SDN ATM switch. It is designed to accommodate data, video, and voice traffic simultaneously and provide the various levels of service required for each type of data. Severely Errored Seconds are defined as the percentage of probability of one-second measurements that have BER An encryption device compatible with the transport data rate is employed on numerous DISN transmission links, especially O-CONUS and on satellite/microwave links. In September 1991, OSD directed DISA to implement the Defense Information Systems Network (DISN).
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