Specifications

Chapter 7 – Call-Related Commands
Multi-Tech Systems, Inc. AT Commands for EDGE (E1) Modems (S000474A) 102
7.18 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.
Syntax: Exec Command: 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. This value defaults if the parameter is omitted (0 will be
assumed).
Notes:
• This command is not PIN protected.
• This command is not supported in airplane mode.
7.19 +++ 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.
Syntax: Exec Command: +++
Response: OK
Notes:
• To return from command mode to data or PPP online mode, enter ATO.
• This command is not PIN protected.
• This command is supported in airplane mode.