[Ovmsdev] Simcom 7000G

Derek Caudwell d.caudwell at gmail.com
Sun Jul 4 15:46:11 HKT 2021

Hi all,

I've been using Realterm to look at the 7000G's capabilities, and although
the documentation only makes indirect reference to supporting uart
multiplex mode, it does accept the AT+CMUX=0 command and reports back
configuration values when queried with AT+CMUX? Unfortunately that appears
to be where its support ends, the device responds with OK to the CMUX
command however there is no response to the SABM command to open the
control channel. I am sending the following hex in Realterm $F9 $03 $3F $01
$1C $F9.

Is there anything else worth trying? or that I'm missing in setting up the

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