ADTRAN 1202011L1 > More Info DSU III AR (All Rate DSU-CSU for 4-wire Dedicated DDS or Switched 56K applications with Secondary channel. LCD display for configuration and status; V.35 and EIA-232 DTE connections; V.25bis Dialing.)
ADTRAN 1200060L2 > More Info TSU (Single port T1-FT1 DSU-CSU with metal chassis, LCD display and front panel, 4 button keypad. VT 100 configuration, status and monitoring. Single V.35 DTE interface. Supports T-Watch PRO. Supports remote configuration-monitoring across the FDL or 8K inband.)
