The clause 5.2 of Telit_UL865_Hardware_User_Guide_r4 document says the AT#SYSHALT command is used to turn-off the modem. It seems that modem does not know this command, it replies ERROR.
Command AT#SHDN is able to shutdown the modem, but after a shutdown the modem goes up again. How could the modem be shut-downed and stay turned off until the power is recycled??
the SYSHALT on HW user guide is a typo, sorry.
SYSHALT is not enabled; use AT+CFUN=4 + 5 Sec instead of SYSHALT.
For what concern AT#SHDN, please remember UL865 self turn ON.
Will the AT#SYSHALT command be supported in the next firmware release??
Telit is still evaluating this
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