AT Command Reference Guide for EDGE Wireless ... - wless.ru
AT Command Reference Guide for EDGE Wireless ... - wless.ru
AT Command Reference Guide for EDGE Wireless ... - wless.ru
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Chapter 7 – Call-Related <strong>Command</strong>s<br />
7.16 <strong>AT</strong>S10 Set Disconnect Delay after Indicating<br />
the Absence of Data Carrier<br />
Description:<br />
This parameter setting determines the amount of time, that the TA remains connected in<br />
absence of a data carrier.<br />
If the data carrier is detected be<strong>for</strong>e disconnect, the TA remains connected.<br />
Read <strong>Command</strong> Syntax: <strong>AT</strong>S10<br />
Response:<br />
<br />
OK<br />
Write <strong>Command</strong> Syntax: <strong>AT</strong>S10=<br />
Response:<br />
OK<br />
ERROR<br />
Parameter Description:<br />
<br />
number of tenths of seconds of delay<br />
001 - 254 Default is 2.<br />
7.17 <strong>AT</strong>O Switch from <strong>Command</strong> Mode to Data<br />
Mode / PPP Online Mode<br />
Description:<br />
Exec <strong>Command</strong> Syntax: <strong>AT</strong>O[]<br />
Response:<br />
<strong>AT</strong>O is the corresponding command to the +++ escape sequence: When you have<br />
established a CSD call or a GPRS connection and TA is in command mode, <strong>AT</strong>O causes<br />
the TA to resume the data or GPRS connection and takes you back to data mode or PPP<br />
online mode.<br />
If connection is not successfully resumed:<br />
NO CARRIER<br />
or<br />
TA returns to data mode from command mode<br />
CONNECT <br />
Note: output only if <strong>AT</strong>X parameter setting with value > 0.<br />
Parameter Description:<br />
<br />
0 Switch from command mode to data mode. Default.<br />
7.18 +++ Switch from Data Mode to <strong>Command</strong><br />
Mode<br />
Description: This command is only available during a CSD call or a GPRS connection. The +++<br />
character sequence causes the TA to cancel the data flow over the <strong>AT</strong> interface and<br />
switch to command mode. This allows you to enter <strong>AT</strong> commands while maintaining the<br />
data connection to the remote device or, accordingly, the GPRS connection.<br />
To prevent the +++ escape sequence from being misinterpreted as data, it must be<br />
preceded and followed by a pause of at least 1000 ms. The +++ characters must be<br />
entered in quick succession, all within 1000 ms.<br />
Exec <strong>Command</strong> Syntax: +++<br />
Response:<br />
OK<br />
Notes:<br />
• To return from command mode to data or PPP online mode: Enter <strong>AT</strong>O.<br />
• In Multiplex mode the +++ sequence does not work. There<strong>for</strong>e, if required in Multiplex mode, the escape<br />
sequence needs to be implemented in the customer’s external Multiplex application. Design solutions, <strong>for</strong><br />
example using the DTR signal or a modem status command (MSC), can be found in [5], Section “Escape<br />
Sequence”. See also Section 4.10, <strong>AT</strong>+CMUX.<br />
Multi-Tech Systems, Inc. <strong>AT</strong> <strong>Command</strong>s <strong>for</strong> <strong>EDGE</strong> Modems (S000371B) 83