Includes Mediant 1000B chassis, one Active/Standby pair of GE interfaces, one module of 4 E1/T1 spans, single AC power supply and fans. Chassis can be expanded with any Mediant 1000 Voice modules such as FXS/FXO/BRI or T1/E1. Order M1KB-SWX module for additional 2 pairs of Active/Standby GE interfaces.
