NEC MH4500 - Manual (Page 149)

Emergency Management Port C-3
The following gives an overview of how the EMP functions in each state.
T Command state is the default COM 2 state. In this state, the EMP
communicates with the server, allowing the client to remotely reset or
power the server up or down. The client can also view the server's System
Event Log (SEL), Field Replaceable Unit (FRU) information, or Sensor
Data Record (SDR) table.
T In redirect state, the EMP serves as a PC ANSI terminal window for
BIOS console redirection. Commands typed in this terminal window are
transmitted through BIOS to the server's console, and text displayed on
the server console are displayed on the EMP's terminal window. With the
EMP in this state, you can remotely view boot messages, access BIOS
setup, and run DOS text mode applications through the EMP's terminal
window.
EMP in Command State