TC63 AT Command Set
2.10 AT^SMSO s
TC63_ATC_V00.490 Page 44 of 501 5/24/05
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2.10 AT^SMSO Switch off mobile station
AT^SMSO initiates the power-off procedure. High level of the module's PWR_IND pin and the URC "^SHUTDOWN"
notify that the procedure has completed and the module has entered the POWER DOWN mode. Therefore, be
sure not to disconnect the operating voltage until PWR_IND is high or until the URC "^SHUTDOWN" is displayed.
Otherwise, you run the risk of losing data. For further details on how to turn off the module see the [2].
Syntax
Unsolicited Result Code
^SHUTDOWN
Indicates that the power-off procedure is finished and the module will be switched off in less than 1 second.
Notes
• Do not send any other AT command after AT^SMSO.
• If AT^SMSO is entered on one of the Multiplexer channels the ME closes the Multiplexer channels, terminates
the Multiplexer and deactivates all other functions. Then, the URC "^SHUTDOWN" will be issued on the phys-
ical serial interface (ASC0). The URC will be transmitted at the bit rate last activated on ASC0 for use with
the Multiplex driver.
• If both interfaces ASC0 and ASC1 are connected the URC appears on both of them.
• If the module is in NORMAL mode and the charger is connected to the VCHARGE line, the AT^SMSO com-
mand causes the module to shut down shortly and then start into the CHARGE ONLY mode. If the module is
in CHARGE ONLY mode the AT^SMSO command is not supported at all. In both cases, the module can only
be switched off by disconnecting the charger. See also [2].
Test Command
AT^SMSO=?
Response(s)
OK
Exec Command
AT^SMSO
Response(s)
^SMSO: MS OFF
OK
Reference(s) PIN ASC0 ASC1 USB MUX1 MUX2 MUX3 Charge 4Last
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