Hi you all
The signal strength for one of my installation is appr. 9 when normal interval is between 1-32 (datasheet).
Is it possible that if the signal strength is too low, the module is not able to connect and transmit data through gprs sockets?
My application transmits data packages to a server, periodically. Each data pacakage includes the signal strength value, among other things. The last package received showed signal strength == 24.
This is equal to good signal strength.
I haven’t received packages for 2 days now, but the module is answering to my status information request via SMS message. The status information includes the signal strength and showes strength == 9.
Every 24 hours I force reset of the application/module, and furthermore I use at+cfun=0 followed by at+cfun=1 to make it re-connect to a valid network cell.
Could it be that the module has found a new cell to connect to, which leads to lower signal strength, and therefore is not returning data pacakages?