Manual

Data Commands
Using AT Commands during a data connection
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WM_DEV_OAT_UGD_049 - 001 VOLUME 2 August 23, 2007
13 Data Commands
13.1 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 to switch to offline mode.
• 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. This "+++" sequence must be sent with a
guard time of 1s before and after the sequence.
Note:
The "+++" sequence will only work with the +ICF command using one of
the following settings:
o 8 data bits, with no parity
o 7 data bits, with even parity
• Switch from offline to online mode
Please refer to the "O" command description.