Dtu:0000:At&F Reset; Sms; Net Indicator Introduction; Notes - Ebyte E840-DTU User Manual

4.1.18 @DTU:0000:AT&F Reset
Send request @DTU:0000:AT&F Request of reseting
For example:
Send request: @DTU:0000:AT&F
Return when checkout is done: @DTU:0000:AT&F
OK
Send request: @DTU:1234:AT&F
Return when checkout is failed: @DTU:1234:AT&F(Input wrong password to test)
ERROR

5. SMS

SMS available
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Message in SMS will be sent but not saved.
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In order to set the report from the transceiver in SMS, users can input +++(No enter) to enter command mode. To cancel it, users can
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input AT+DTUFILTER=0 to enter filter mode.

6. NET Indicator Introduction

Transceiver Net registry off: light on for 100MS, light off for 700MS
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Transceiver Net registry on: light on for 100MS, light off for 1900MS
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Transceiver server on: light on for 100MS, light off for 100MS
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7. Notes

7.1 Notes for Powering on

DTU UART baud rate(default): 115200
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DTU power on report: AT Ready
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5s after DTU powered on, input AT+CPIN? to check if the SIM card is read successfully.
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DTU powered on with SIM card, it will restart when it fails to connect to GPRS with 45S, and after that it will restart when it fails to
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connect to the server in 2 m. DTU powered on without SIM card, it won't restart.
DTU powered on with SIM card, it will return CONNECT OK when it connects to the server successfully and it enter transparent
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transmission mode. It stays at the configuration mode when not connected. Users can input configuration command to adjust DTU
parameters.
When DTU is at transparent transmission mode, users need to input +++(\n) to go back to configuration mode and configure the
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parameters.
To enter transparent transmission mode, users need to input ATO.
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