GL200 protocol

Hi,
I have a GL521 that connects to the server via data only, no SMS. The location is displayed and traccar works really well. I have been attempting to send a command via the device terminal in the traccar web. I have set GL200.ack to true, am I correct in assuming that I convert the AT commands to HEX and they are the command that is sent via the traccar server? eg to reboot the device the AT command is AT+GTRTO=gl521m,3,,,,,,FFFF$ and the HEX is 41542b475452544f3d676c3532316d2c332c2c2c2c2c2c4646464624. Is this the correct method?
Dan

For custom commands you don't need to convert to HEX. Traccar expects text values for this protocol.

many thanks for the quick reply Anton. I know just send the AT text string and this works fine. The device has to be online for the server command to be accepted by the device. Do you know if there is an option in the server software to send the message, rather than wait for the device to contact the server before sending out? Currently not using fixed SIM IP's
thanks in advance
dan

Only via SMS.

Ok thanks.