Defense Information System Network (DISN) asynchronous transfer mode (ATM) goal architecture and transition strategy

Current DISN customer services include voice (telephony), data (computer networks) and video. The DISN that has operated for many years and is largely operational today having evolved from times where these services required dedicated facilities, such as switching and transmission connectivity. Even today, each of these services continues to rely on dedicated resources. As a result, the DISA cannot fully optimize the acquisition of the most expensive component of the DISN services, which is the transmission bandwidth. Much of the available bandwidth is not used regularly but must remain available to support unanticipated surges in demand. The ATM affords the opportunity to consolidate all “native” services onto a single, integrated infrastructure. The single integrated architecture for DISN ATM services exploits the promise of ATM as an enabling technology and will offer better overall services to DOD users at substantially reduced costs