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Chapter 2 Hardware Introduction
TE/NT Setting 1: these jumpers are used for setting TE or NT for the ports, each port can work in
TE or NT mode independently. For example, in the following picture, the first three ports are set
to TE mode, and the fourth port is set to NT mode.
TE/NT Setting 2: these jumpers are set for NT mode, but the TE mode does not need this jumper.
For example, in the following picture, the first three ports are set to TE mode, and the fourth port
is set to NT mode, so the J100, J200, J300 do not need jumpers, and the J400 is connected by
jumper.