Huawei MC509 manual S-Command for Setting the Changing Mode of DSR Signals, Dvalue, Svalue

HUAWEI MC509 CDMA LGA Module
AT Command Interface Specification	Serial Port Control Commands

5.2&D–Command for Setting the MT Action in Response to the DTR Signals

5.2.1 Syntax

Command	Possible Response(s)
&D[<value>]	<CR><LF>OK<CR><LF>
	In case of an MT-related error:
	<CR><LF>ERROR<CR><LF>

5.2.2Interface Description

This command sets the MT action when data terminal ready (DTR) signals change from ON to OFF.

5.2.3Parameter Description

<value>:

0:The MT ignores the DTR status.

1:When DTR signals changes from ON to OFF, the MT switches to the command mode and maintains the current conversation (reserved and not supported at present).

2:When DTR signals changes from ON to OFF, the MT switches to the command mode and interrupts the current data conversation (CSD, packet-switched (PS) data service); when DTR=OFF, automatic answer is disabled (default value after startup).

In case of using the command without <value>, <value> is set to 0.

5.3&S–Command for Setting the Changing Mode of DSR Signals

5.3.1 Syntax

Command	Possible Response(s)
&S[<value>]	<CR><LF>OK<CR><LF>
	In case of an MT-related error:
	<CR><LF>ERROR<CR><LF>

Issue 01 (2011-08-26)	Huawei Proprietary and Confidential	53
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