Moxa Technologies G2150I Using AT Commands During a Data Connection, Bearer Type Selection +CBST

OnCell G2150I AT Command Set Data Commands

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=?	+CBST: (0-8,65,66,68,70,71),(0),(0-3)
Note: Test command	OK
	Note: Data 14.4 kbps not supported
AT+CBST=?	+CBST: (0-8,12,14,65,66,68,70,71,75),(0),(0-3)
Note: Test command	OK
	Note: Data 14.4 kbps supported
AT+CBST=7,0,1	OK
Note: Ask for a bearer	Note: Bearer supported
AT+CBST?	+CBST:7,0,1
Note: Current values	OK
	Note: Command valid
AT+CBST=81,0,0	+CME ERROR: 4
Note: Ask for a bearer	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)

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