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发表于 2009-8-8 10:44:33
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偶只针对WAVECOM模块
使用WIP或ADL控制模块时,+++肯定有效
MODEM拨号上网ATD时,情况未知
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 |
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