Network Intelligence/Access Terminal NIA-1001
It looks very similar to NIA-2001 also distributed by Aucnet except that NIA-1000 has the AA battery compartment at the top and lacks the CPU selector of NIA-2001. Whether the actual manufacturer was Takaoka Electric like NIA-2001 is unknown. The startup screen displays 1989 which is not substantiated to be the release year. The manufacture date on the nameplate on one of the units is Jun 1991.