HUAWEI MU509 HSDPA LGA Module
AT Command Interface Specification
Serial Interface Control Commands
Issue 04 (2013-01-28)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
59
5
Serial Interface Control Commands
5.1 &C–Set DCD Line Mode
5.1.1
Command Syntax
Command
Possible response(s)
&C[value]
<CR><LF>OK<CR><LF>
In case of MS-related error:
<CR><LF>ERROR<CR><LF>
5.1.2
Description
The command determines how ITU-T V.25 circuit 109 (or equivalent) relates to the
detection of received line signal from remote end (recommended default 1 i.e. 109
operation relates to detection of received signal).
5.1.3
Defined Values
<value>:
0: Carrier Detection (DCD) line always is ON.
1: DCD line is in ON in the presence of data carrier only (default value).
Note:
AT&C will set value to 0.