HUAWEI MG323 GSM M2M Module

 

AT Command Interface Specification

Commands for Call Control

7.10+++ - Command for Switching Data Mode to Command Mode

The +++ command switches data mode to command mode during the connection of CSD services or GPRS data services.

Execution +++

command

Function After “+++” is executed, the TA terminates the data transmission stream on the AT interface and enters the command mode so that AT commands can be executed when the links towards remote terminals or GPRS connections are maintained.

Response <CR><LF>OK<CR><LF>

Note:

zTo prevent the entered command line from being confused with “+++” in the transmission data stream, do not enter other characters within 1000 ms before and after entering the command line. In addition, two adjacent ‘+’s must be entered at a time interval of smaller than 1000 ms.

zIn multiplexing mode, this command is unavailable. In this case, you need to enter other exit instructions (such as DTR signals and modem status command MSC) to switch data mode to command mode.

7.11ATO - Command for Switching Command Mode to Data Mode

The ATO command switches command mode to data mode. When a CSD call or GPRS connection is established, the TA is in command mode. This command can switch command mode to data mode or PPP online mode.

Execution ATO[<n>] command

Function Switches command mode to data mode.

Response In case of successful execution: <CR><LF>CONNECT <CR><LF>

In case of failed connection recovery: <CR><LF>NO CARRIER<CR><LF>

Parameter description

<n>: integer; ATO is equivalent to ATO0.

0 (default value): switches command mode to data mode.

Issue 02 (2010-11-23)

Huawei Proprietary and Confidential

66

Copyright © Huawei Technologies Co., Ltd.

 

 

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Huawei MG323 10 +++ Command for Switching Data Mode to Command Mode, ATO Command for Switching Command Mode to Data Mode