BANDWIDTH ON DEMAND
JIPM WORKS IN A HUB-SPOKE CONFIGURATION, SIMILAR TO DIRECTV.
WITH JIPM, ONE SIGNAL GOES UP FROM THE HUB TO THE SATELLITE AND SPREADS TO MANY OTHER REMOTE MODEMS [THE SPOKES] AROUND THE WORLD.
a Telstar 14 commercial satellite in the X, Ka, and Ku bands. The JIPM Network Control Center, a two-rack hub, success- fully broadcast and received traffic from multiple remote modems, each of which is housed in a 1U-size (1.719-inch or 43.7-millimeter) chassis.
“JIPM works in a hub-spoke configuration, similar to DIRECTV,” said Art Reiff, a SATCOM consultant with DCATS.
“With JIPM, one signal goes up from the hub to the satellite and spreads to many other remote modems [the spokes] around the world.”
Testers demonstrated both unicast (host- to-host) and multicast (one host to a specific set of hosts) operations, using 11.58-meter AN/GSC-39 terminals and 2.4-meter tactical Very Small Aperture Terminals to transmit at X-band; the nine-meter Ka Satellite Transmit and Receive Systems AN/GSC-70 terminal to transmit at Ka-band; and a satellite simu- lator to transmit at C-band.
Reiff said that JIPM uses satellite band- width much more efficiently than prior types of modems.
It is unique among modems in that it employs internal TRANSEC that has been certified to comply with the National Institute of Standards and
38 Army AL&T Magazine
Technology Federal Information Processing Standard 140-2.
FIRST DELIVERIES DCATS is acquiring JIPM via an $87 million delivery order awarded in Octo- ber 2007 on the World Wide Satellite Systems Indefinite Delivery/Indefinite Quantity contract from prime contractor Globecomm Systems Inc., with ViaSat Inc. serving as the major subcontractor.
The first deliveries of JIPM Network Control Centers were in January to vari- ous DOD Teleport and Standardized Tactical Entry Point sites. The first deliv- eries of remote modems were in April to Hanscom Air Force Base, MA, followed by deliveries in June and July to the Navy in Charleston, SC, and Norfolk, VA.
The version of JIPM that just completed qualification testing could be just the first stage of an evolving standard IP infra- structure that will keep growing to serve future warfighter needs.
Christopher Catlin, JIPM Program Man- ager in DISA’s JIPM Program Office, said his staff is working to identify a second-source vendor for JIPM to ensure multiple providers. “We released an RFI [Request for Information] in October for industry to review the JIPM Interoper- ability Draft,” said Catlin, adding that
”
many vendors responded with excellent comments and even provided recommen- dations that could improve JIPM’s utility as an open-standard device.
Catlin said that in addition to deliver- ing JIPM to meet current needs, DISA is looking toward future IP modems that meet visions defined by DOD.
“We want to ‘right-size’ IP modems that will logically play into a defined technol- ogy road map for DOD,” he said.
He added that the JIPM Program Office has been working with the user commu- nity to identify the next wave of JIPM enhancements, such as dynamic routing, improved encapsulation, mesh network architectures, and communications on the move, as well as remote modem pack- aging options that will accommodate smaller size and less weight and will pro- vide power for ground, shipboard, and airborne platforms.
JOHNNY NG is the Product Leader for Modems in the DCATS Project Office, as matrix support from the U.S. Army Communications- Electronics Research, Development, and Engineering Center. He holds a B.E. from the City College of New York and is certified Level III in program management and Level II in systems engineering.
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