By the way does anybody have the BM818 pdf that has all the AT codes listed that are supported? The documents i have reviewed do not show AT commands specific for the modem.
Never mind found it:
In a couple of threads (and wiki ) there were some small tests of using AT commands (some for BM818 ) to do stuff, get information about network etc. Has anyone tested them more, made any complex scripts? Did anyone make a call using those (and not using call )?
(edit: and here is a list of a few hundred possible AT commands to try, for a different modem that has the same chip as BM818)
https://www.makerfabs.com/wiki/images/c/c4/SIM7500_SIM7600_Series_AT_Command_Manual_V1.10.pdf
Running something like:
AT+CEREG=[<stat>]
should find EPS network registration status.
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