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iTegno 39XX GPRS Modem
AT Commands Guide
02000C17
•
v1.5
Confidential
All specifications are correct at the time of release. iWOW Connections owns the proprietary rights to the information contained herein this
document. It may not be edited, copied or circulated without prior written agreement by iWOW Connections Pte Ltd. © 2011, 2012 iWOW
Connections Pte Ltd
177
12.5
DTR-Usage &D
Description:
This command controls the Data Terminal Ready (DTR) signal. Pin 35 is used for DTR signaling.
Syntax:
AT&D<n>
Command
Possible Responses
AT&D<n>
OK
Defined Values
<n>
0 =
DTR signal is ignore
1 =
ME switch from data to command mode when DTR switches from ON to OFF
2 =
Call is cleared when DTR switches from ON to OFF
12.6
DSR-Usage &S
Description:
This specific command controls the Data Set Ready (DSR) signal. Pin 18 is used for DSR.
Syntax:
AT&S<n>
Command
Possible Responses
AT&S0
OK
Note: DSR always ON
AT&S1
OK
Note: DSR off in command mode, DSR on in data mode
Defined Values
<n>
0 =
DSR always ON
1 =
DSR off in command mode, DSR on in data mode