Using the SIMCOM 7600E device to connect back to a server via TCP.
it will connect and hold its connection fine, I am asking it ti report back its CSQ and cell information.
The CIPSEND:0,1,1 is a single byte back to my server (for the purpose of ascertaining if the connection is still live via a web gui and notification)
It runs fine until some time between hour 0 and hour 50 or running the +CIPSEND:0,1,1 command to the modem returns RX : ERROR as below,
The output below is me communicating with the modem, The modems output stops responding entirely when views via its USB comm port. Has anyone experienced this before?