How to config MC7304 & MC7430 in embedded Linux?

  • This time modem dropped off when it’s idle, but I guess sometimes it will drop off when it’s busy as well. We have random drop off issue on MC8705 too.
    Is there any AT commands to control this? Does it go off for saving energy?
    This product is not portable one, so I need keep it always online.

-If I remove AT+CGDCONT and AT$QCPDPP from chat script, modem comes online.

Thanks.