D-Set Dte Ready (Dtr) Line Mode; Command Syntax; Description; Defined Values - Huawei MU509 At Command Interface Specification

HUAWEI MU509 HSDPA LGA Module
AT Command Interface Specification
5.2 &D–Set DTE Ready (DTR) Line Mode

5.2.1 Command Syntax

Command
&D[value]

5.2.2 Description

The command determines how DCE responds when ITU-T V.25 circuit 108/2 (or
equivalent) is changed from ON to OFF condition during online data state.

5.2.3 Defined Values

<value>:
0: DCE ignores status of DTR.
1: Change to command mode and retain the connected call when DTR changes from
ON to OFF (reserved, not supported currently).
2: Disconnect data call (CSD, PS data service), change to command mode when DTR
changes from ON to OFF (default value).
Note:
5.3 &S–Set Data Set Ready (DSR) Line Mode
5.3.1 Command Syntax
Command
&S<value>
5.3.2 Description
The command determines how ITU-T V.25 circuit 107 (or equivalent) relates to the
detection of received line signal from remote end (recommended default 0 i.e. 109
operation relates to detection of received signal).
Issue 04 (2013-01-28)
AT&D will set value to 0.
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Possible response(s)
<CR><LF>OK<CR><LF>
In case of MS-related error:
<CR><LF>ERROR<CR><LF>
Possible response(s)
<CR><LF>OK<CR><LF>
Serial Interface Control Commands
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