After searching the forum I still have some questions unanswered.
My use case is to connect the TRB142 to an legacy car device, previous solution was a legacy GSM modem but this will be unsupported by the mobile network soon.
SMS should be received and transmitted transparently and immediate using PDU mode. So far this seem to be possilbe.
Is there a list or document available for the supported AT commands of this device?
Which AT command settings can in some way be saved in NVM so it is still active after a reboot?
The TRB142 repeatedly transmitts some mobile network status, this may affect my serial communication with AT commands. At least it interferes with my manual AT commands. So I turn it off with AT+QCSQ=0. Can you turn this off automatically by adding this to the rc.local file by calling the command /usr/sbin/gsmctl -A ‘AT+QCSQ=0’, so it will be updated at restart?
I have read your answers and we will continue to setup the TRB unit.
During the passed time we tested and investigated the TBR unit further, and we have got one new question. Do you have any suggestions of how to achieve the task below?
We have tried to change the SMS Event Reporting Configuration with command AT+CNMI to activate immediate SMS reporting when a SMS is received. But it did not work.
We want the TRB142 modem to output this indication to our device when an SMS is received.
Short message is output directly to the TE (in PDU mode)
Syntax: +CMT:,
An example is: +CMT: ,26 "