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Please advise : CDC example with USB modem

Question asked by SUMATE LEAVSUKSANG on Jul 4, 2012
Latest reply on Aug 6, 2012 by kario303

Hello all,


Now, I'm trying to communicate with USB modem (3G dongle) by CDC_Serial example project which I found in "Freescale MQX 3.8/usb/host/examples/cdc/".


Everything look very well, I can send AT-Commands to query and get their reply correctly.

Until when I dial to GPRS by the command "ATDT*99***1#", Which  I expect to receive "CONNECT" response.

But, I never gotten this reply, The modem just switch to data mode and don't accept command till reset.

Has someone give me an advise this problem, Please?