Is there any way to fully power off the MC/EM modules (MC7455, EM7565), e.g. so that the device is no longer exposed in the PC until the power cycles to OFF and ON again?
The AT reference has some commands that seem related, but none do a full power off like that:
- AT!POWERDOWN: The module ends up doing a reset and is back reporting CFUN=7. Also, the reference says “This command should only be used when testing using an appropriate testing jig—do not use it when the modem is installed in a computer.”
- AT+CFUN=0: The module gets into low power mode without RF or SIM access.