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OnCell G2150I AT Command Set Data Commands
8-2
Using AT Commands During a Data Connection
To use AT Commands during a data connection (e.g., while the product is in online mode), it is
necessary either to switch to offline mode, or to use the specific +WMUX command to enable
Commands / Data multiplexing.
Switch from online to offline mode:
To switch from online mode to offline mode, the “+++” sequence must be sent. Following this, the
product gets back to offline mode with an “OK” response, and a AT command can be sent.
Note: The “+++” sequence will only work with the +ICF command using one of the following
settings:
• 8 data bits, with no parity
• 7 data bits, with even parity
Switch from offline to online mode: See the ATO command description.
Bearer Type Selection: +CBST
Description: This command applies to both outgoing and incoming data calls, but in a different
way. For an outgoing call, the two parameters (e.g. <speed> and <ce>) are meaningful, whereas
for an incoming call, only the <ce> parameter is used.
Note 1) For incoming calls, if <ce> is set to ‘T’ only and the network offers only ‘NT’
or vice versa, then the call is released.
Note 2) Values 2 and 3 for <ce> parameter are equivalent to former values 100 and 101.
Those values are managed for compatibility purposes, but they shouldn’t be used in new code (2
as former 100, and 3 as former 101).
Command syntax: AT+CBST= <speed>, <name>, <ce>
Command Possible responses
AT+CBST=?
Note: Test command
+CBST: (0-8,65,66,68,70,71),(0),(0-3)
OK
Note: Data 14.4 kbps not supported
AT+CBST=?
Note: Test command
+CBST: (0-8,12,14,65,66,68,70,71,75),(0),(0-3)
OK
Note: Data 14.4 kbps supported
AT+CBST=7,0,1
Note: Ask for a bearer
OK
Note: Bearer supported
AT+CBST?
Note: Current values
+CBST:7,0,1
OK
Note: Command valid
AT+CBST=81,0,0
Note: Ask for a bearer
+CME ERROR: 4
Note: Bearer not supported
Defined values:
<speed>
0 (default) Autobauding (modem type: none)
1 300 bps (modem type: V.21)
2 1200 bps (modem type: V.22)
3 1200/75 bps (modem type: V.23)
4 2400 bps (modem type: V.22bis)
5 2400 bps (modem type: V.26ter)