USB USB Indicator
ON
OFF
The USB flash drive is inserted
The USB flash drive is not inserted
The TF card is inserted
The TF card is not inserted
ON
OFF
TF TF Indicator
Indicators
Definition
Status
Description
Power
Indicator
Running
Indicator
ON
OFF
The device is powered on
There is no power supply or the
power supply is abnormal
OFF
Flashing
PWR
RUN
The system is initializing
The device is not running normally
ON
MCU
board
Type
FXS/FXO/
FXU
UserBoard
The device is initialized
successfully and running normally
Power
Indicator
Running
Indicator
ON
OFF
The power supply is not normal
The power supply is normal
Fast
Flashing
PWR
RUN
FXS/FXO
Indicator
FXS/FXO
ON
OFF
The FXS port is in on-hook status
The FXS port is in off-hook (in-use)
status
DTU
UserBoard
Power
Indicator
Running
Indicator
ON
OFF
The device is powered on
There is no power supply or the power
supply is abnormal
PWR
RUN
The system is initializing
The device is initialized successfully
and running normally
ON
Slow
Flashing
Slow
Flashing
The device is not running normally
OFF
E1/T1
Indicator
E1/T1
E1/T1 line is disconnected
E1/T1 line is connected
OFF
ON
All ports are registered
Part of the port registered successfully