Hi mlw, thank you and aleksander0m for your responses. Could you possibly elaborate on the unit starting the default bearer?
I have tested our MC7430 units and determined the pDefaultPDNEnabled setting is not enabled on them, and is not enabled by them during the boot process. I assume this also lines up with the !SCACT AT command referenced in the documentation, but I’m not certain about this.
The MC7430 unit still attaches and starts an LTE data session on our private APN even when it is not plugged into any host (simply powered up via USB). When plugged into a host, we see two authentication requests come in before the host has a proper data session with IP; one from the radio itself, then one from the host dialing through the radio.
We do not want the radio to attempt an IP connection before the host machine dials through the modem, but cannot find any way to stop this.
EDIT: This behavior occurs whenever AT+CGDCONT=1 is configured with a valid APN for the SIM (when using the modem interface). We need to do this to dial, but we don’t want the radio to start the session on it’s own…