The MX2800 DS3 is a fully redundant M13 multiplexer that is AC/DC powered and has an optional built-in V.34 modem for management and battery backup system. The MX2800 DS3 system is complete with redundant controller cards, one 48V DC power supply, and one AC power supply. The unit is 19" or 23" rackmountable and ships with one 8-pin to 8-pin modular cable, one modular to DB-9 female adapter.
Adtran 4205290L9#B Data Networking Overview
A fully redundant M13 multiplexer that is AC/DC powered and has an optional built-in V.34 modem for management and battery backup system.