A model developed in the past which is still in use that was not implemented using today's standards (e.g., software, communication, DIS, ALSP, etc.). Some legacy models have been modified with interfaces to some of the current standards extending their usefulness and interoperability with newer, standards based models. [AFI 16-102; DSMC 1]
Yimodeli eyaphuhliswa kudala kwaye nangoku isasetyenziswa kodwa ayikazalisekiswa ngokusetyenziziswa kwemigangatho yale mihla (umz., i-software, uthungelwano, i-DIS, i-ALSP, njl. njl). Imodeli ezithile ezililifa zalungiswa ngezixhobo ezisebenzisanayo kweminye imigangatho ekhoyo ngoku eyandisa ukubaluleka kwazo kunye nokunokwenzeka kwemodeli ezisekelwe kwigangatho emitsha. [AFI 16-102;DSCM 1]