Specifications

Chapter 7 – Call-Related Commands
Multi-Tech Systems, Inc. AT Commands for EDGE Modems (S000371B) 83
7.16 ATS10 Set Disconnect Delay after Indicating
the Absence of Data Carrier
Description: This parameter setting determines the amount of time, that the TA remains connected in
absence of a data carrier.
If the data carrier is detected before disconnect, the TA remains connected.
Read Command Syntax: ATS10?
Response: <n>
OK
Write Command Syntax: ATS10=<n>
Response: OK
ERROR
Parameter Description:
<n>
number of tenths of seconds of delay
001 - 254 Default is 2.
7.17 ATO Switch from Command Mode to Data
Mode / PPP Online Mode
Description: ATO is the corresponding command to the +++ escape sequence: When you have
established a CSD call or a GPRS connection and TA is in command mode, ATO causes
the TA to resume the data or GPRS connection and takes you back to data mode or PPP
online mode.
Exec Command Syntax: ATO[<n>]
Response: If connection is not successfully resumed:
NO CARRIER
or
TA returns to data mode from command mode
CONNECT <text>
Note: <text> output only if ATX parameter setting with value > 0.
Parameter Description:
<n>
0 Switch from command mode to data mode. Default.
7.18 +++ Switch from Data Mode to Command
Mode
Description: This command is only available during a CSD call or a GPRS connection. The +++
character sequence causes the TA to cancel the data flow over the AT interface and
switch to command mode. This allows you to enter AT commands while maintaining the
data connection to the remote device or, accordingly, the GPRS connection.
To prevent the +++ escape sequence from being misinterpreted as data, it must be
preceded and followed by a pause of at least 1000 ms. The +++ characters must be
entered in quick succession, all within 1000 ms.
Exec Command Syntax: +++
Response: OK
Notes:
• To return from command mode to data or PPP online mode: Enter ATO.
• In Multiplex mode the +++ sequence does not work. Therefore, if required in Multiplex mode, the escape
sequence needs to be implemented in the customer’s external Multiplex application. Design solutions, for
example using the DTR signal or a modem status command (MSC), can be found in [5], Section “Escape
Sequence”. See also Section 4.10, AT+CMUX.