MC55 AT Command Set
7.18 +++
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MC55_ATC_V01.05 Page 161 of 469 2/10/04
Confidential / Released
7.18 +++ Switch from data mode to command mode
Syntax
Command 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.
Note
• To return from command mode to data or PPP online mode: Enter ATO.
Exec Command
+++
Response(s)
OK
PIN ASC0 ASC1 MUX1 MUX2 MUX3
! % ! % % %
Reference(s)
V.25ter
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