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EHS6T - USB Serial Port dies after AT+CFUN=1,1 | Thales IoT Developer Community

April 1, 2015 - 12:07pm, 4644 views

If I issue an AT+CFUN=1,1 (soft reset) command to an EHS6T modem the connected USB serial port is dropped and I can not open the serial port again with out a power cycle of the EHS6T (hard reset).

Is this normal behavior for the USB serial port interface on the EHS6T modem ?

I get an OK answer from the AT+CFUN=1,1 but after that the modem does not respond to AT commands and there is no ^SYSSTART shown.

If I issue an AT+CFUN=0 (shutdown) I get the OK and ^SHUTDOWN shown fine.

It seems like the AT+CFUN=1,1 is not working properly.

I have firmware revision:

ati                                                                             

Cinterion                                                                       

EHS6                                                                            

REVISION 02.000