Rainbow Electronics MG260 - Manual (Page 148)

FLYFOT-MG260-MODULE
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15.5 Set DTR signal &D
Description :
This commands controls the Data Terminal Ready (DTR) signal.
Syntax :
Command syntax : AT&D<n>
Command
Possible responses
AT&D0
Note : The DTR signal is ignored OK
Note : Command valid
AT&D1
Note : Modem switches from data to command
mode when DTR switches from ON to OFF OK
Note : Command valid
AT&D2
Note : Upon DTR switch from ON to OFF, the
call is released OK
Note : Command valid
Defined values:
<n>
0 : The DTR signal is ignored
1 : Modem switches from data to command mode when DTR switches from ON to OFF
2 : Upon DTR switch from ON to OFF, the call is released