Appendix |
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F | DART AT Command Set |
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NOTE:
Entering more than 80 characters at one time will cause and ERROR message
AT command set usage
AT commands can be concatenated
∙Normal command concatenation
ATE1V1&D0&S1\F3\N2
AT\S?S57?&V
∙White space concatenation (for readability)
AT E1 V1 &D0 &S1 \F3 \N2
Missing parameters on AT commands default to zero. For example, if you mistakenly entered AT&E (forgetting to specify a value in the range of
Similar problems can arise if you enter invalid commands since the DART assumes you’re trying to concatenate commands. For example, if you mistakenly enter AT\N? (an invalid command) the DART assumes it was a concatenation of AT\N and ? The result is a display of the last register referenced (due to the AT?), and to set \Jn to \J1 (due to the AT\N0; the missing parameter defaults to 0). This could cause serious problems because a change to the channel restrictions (\Jn) could prevent the modem from being able to acquire a channel or register.
The obvious recommendation here is to use caution when entering commands. If you get unexpected results, display the register settings and modem profile with an AT&V command to ensure that you have not inadvertently altered the modem profile as was outlined above.
Basic AT commands
The DART commands are both a compatible subset and superset of the de facto industry standard AT command set. A subset because some of the wireline commands serve no useful purpose in a wireless environment; a superset because the wireless environment and built in TCP/IP stack requires additional options to be specified.
For each command, the default parameter value for the factory setup profile (restored by AT&F) is identified.
