Got one on my desk here at work. Actually a tandberg unit. They are pretty cool and it's great to see the tech being put to good use. Instead of meetings about meetings... I bet the soldiers love it. We use IP tunnels/IPSEC. You are probably doing the same, more secure a little less overhead on the line...Although they do gobble up the BW. It can be tough in that part of the world to get good BW. At least twice a week we run into some problems with local ILECS or Telco getting the BW or lines dropping. The infrastructure just isn't there yet.
Anyway,