My microcontroller is receiving an MQTT message through a UART connection to a cellular modem in response to an AT command, the response I am getting looks like: 21:25:42.224 -> AT+QMTPUBEX=1,0,0,0...

Hi I'm recently working on a project related to mobile baseband and I found this AT+CMUX command. However I hardly found any references about this, can someone please explain what does it do and what ...

I received yesterday my brand new Arduino MKR GSM 1400 and started playing around with today. However, I'm having trouble stablishing the connection with the SIM card. I'm using the "ReceiveSMS&q...

I have to control a modem Cinterion ELS61 with a host application. Can anyone tell me in simple words which is the real difference among at+creg?, at+cgreg? and at+cereg? commands? I know that cgreg i...