Dialogic® Diva® Media Boards use MR, MMR, T.6 fax document compression. In order to reduce transmission time, Diva Media Boards select the best compression algorithm supported by the opposite side. The Diva Media Board's RISC CPU is used to re-compress 1D-coded page data from the application to the format requested by the opposite side (transmission) and to convert received data to 1D-coded page data that is sent to the application (reception).
The re-compression process is handled internally by the board's RISC CPU and happens fully transparent to the application that deals only with 1D (MH) coded data.
You can adjust the compression-related T.30 protocol settings via Global fax configuration options.