Chapter 3: AT Commands Reference
December 31, 2007 AT Commands Reference Manual 3-35
The ESC command +++, transfers the phone to the Command mode (able to input AT commands,
while preserving the Data call). The O command returns the phone to the fully Online Data mode
(as it was before using the ESC command).
Note: The escape character '+' can be changed using the S2-register.
The time delay between consecutive escape characters is configured using the
S12-register.
Example
ATD035684072//Calling a remote modem - data call
CONNECT//G24 is in Data mode
//Escaping back to Command mode using the +++ sequence
OK
AT //G24 is in Command mode
OK
ATO //Returning to Data mode
CONNECT
&Q, Asynchronous Mode
This command selects the asynchronous mode, and has no effect.
+CHUP, Hang Up Call
This command causes the G24 to hang up the current GSM call.
Command
Type
Syntax Response/Action
Execute
ATO CONNECT
+CME ERROR: <err> If phone is not in Data
Call
NO CARRIER: If connection is not
successfully resumed.
Qn Description
Q0 Normal asynchronous operation (no error correction)
Q5 Error corrected operation (default)
Q6 Normal asynchronous operation (no error correction)
Command Type Syntax Response/Action Remarks
Set
+CHUP OK
+CME ERROR <err>
The Set command hangs up the current
GSM call.
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