DoD recognized H.320 as the minimum acceptable standard for VTC and adopted it into the Federal Telecommunications Recommendation (FTR) 1080B-2002. This FTR sets the minimum guidelines for Video Teleconferencing within DoD and DISN Video Services. Conforming to this standard simply means that equipment purchased for use with DISN Video Services will be able to communicate at a common level.
DISN Video Services network is covered by the FTR 1080B-2002. An industry profile based on FTR 1080B-2002 reiterates the minimum operating environment but allows for the use of advanced capabilities. You may add any of the advanced capabilities that you desire such as importing video clips, computer graphics, "whiteboard" applications, or document sharing/collaboration. When utilizing these advanced capabilities, be aware that the VTF you are conducting a conference with may not support the advanced capabilities that you have.
Equipment used to connect to DISN Video Services must, at a minimum, be capable of operating over one and two channels at quarter common intermediate format (QCIF) resolution, operate at variable rates from 56 to 1,920 kbps, have a CODEC that is capable of coding at a minimum of 6 frames a second and decoding at a minimum of 7.5 frames a second. Algorithm support must be at a minimum compliant with standard H.261, and resolution must support QCIF or Common Intermediate Format (CIF). QCIF and CIF define the video display with parameters such as number of lines and pixels.
All you really need to verify is that the equipment you purchase (regardless of advanced capabilities) is H.320 compliant and conforms to FTR 1080B-2002!
FTRs are periodically revised and reissued by the National Communications System (NCS) Technology and Standards Division. The latest in the FTR 1080 series, as well as other Federal telecommunication documents can be found on the Index of Available Federal Standards on Telecommunications, on the NCS Web site.