DM810. Standalone SDH Mux.
RB-04

The RB-04 is an adapter between the DB44 connectors and a ruler, with 6 DB25 connectors. In this way each of the V.35 interfaces is presented in DB25 female connector with pinout according to ISO2110 Amd.1, compatible with RS530. The ruler is standard size to be installed in 19-inch racks, and has 0.5U (unit height).