Power Down - Audiotel BASE Manual Del Usuario

Using the RS232 control line DTR
The modem can be switched on in the same way as via the Ignition signal, by
activating the RS232 control line DTR.
Power IN
IGN/DTR

Power Down

SWITCHING OFF THE MODEM (valid only for INDUSTRIAL BASE)
The modem can be switched off in two different ways:
Software switching off
The software shutdown via the AT^SMSO command is always advisable for a
controlled shutdown of the modem (see the timing diagram below).
36
GSM/GPRS INDUSTRIAL MODEM
T 1
T 2
T 1 > 500msec T 2 > 500msec