Hello all! I want to send some data over NB-IoT network via CoAP protocoll with the BC92-TE-B evalboard. The Network connection seems fine and I have an IP address assigned. I am using the CoAP AppNote by Quectel https://forums.quectel.com/uploads/short-url/wcsP63I2G298iGZ7OMkTCXZRAMS.pdf
The problem: For the CoAP configuration, it seems that none of the CoAP-related AT commands work. Everytime I enter a CoAP-AT-Command, “+CME ERROR: invalid command line” is returned (same return-value like any other arbitrary string).
AT+QCOAPCFG="dtls",0 *+CME ERROR: invalid command line*
AT+QCOAPOPTION=? *+CME ERROR: invalid command line*
Firmware version is BC92RBR01A05.
Can anybody help?