Application Of Reference; Modifying The Rights Of The Devices Port; Testing At Commands On The Devices Port; Create A Ppp Connection - Quectel UC20 User Manual

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Instructions for Use

After the USB driver of UC20 module being loaded successfully, you can make the applications of the

UC20 module.

It is suggested that you dispose the VoiceCall and SMS service on AT interface and dispose the Data

service on Modem interface.

4.1.

Modifying the Rights of the Devices' Port

Before using the UC20 module, make sure that the two ports possess readable, writable, and executive

rights.

For example, type the commands below in the terminal

chomd 777 /dev/ttyUSB2

chomd 777 /dev/ttyUSB3

4.2.

Testing AT commands on the Devices' Port

You can use serial debugging tools to send AT commands, and check on the working of the UC20

module.

When you configure the serial debugging tools, the serial port must be "/dev/ttyUSB2" or

"/dev/ttyUSB3 "and the sending data may be as follows:

Sending data: AT\r\n

Received data: OK

If the received data is "OK ", it proves that the UC20 module is available.

4.3.

In general, you should create a PPP connection before using the data service of UC20 modules. The

command of creating a PPP connection terminal is shown as below:

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