Multi-Tech MultiModem EDGE Reference Manual page 256

<text>
String type value indicating the text to be displayed when alarm time is reached; maximum length is <tlength>.
By factory default, <text> is undefined.
Note: <text> will be stored to the non-volatile flash memory when the device enters the Power Down mode via
AT^SMSO. Once saved, it will be available upon next power-up, until you overwrite it by typing another text. This
eliminates the need to enter the full string when setting a fresh alarm.
<text> should not contain characters which are coded differently in ASCII and GSM (e.g., umlauts). See also
"Supported character sets" and "GSM alphabet tables".
<tlength>
Integer type value indicating the maximum length of <text>. The maximum length is 16.
Notes:
•
After the alarm was executed the parameter <time> of AT+CALA will be reset to "00/01/01,00:00:00", but
<text> will be preserved as described above.
• If the Multi-Tech wireless modem is totally disconnected from power supply, the most recently saved
configuration of +CALA:
<time>[,<n>[,<type>[,<text>]]] will be presented when the Multi-Tech wireless modem is powered up.
•
Each time the Multi-Tech wireless modem is restarted it takes 2s to re-initialize the RTC and to update the
current time. Therefore, it is recommended to wait 2s before using the commands AT+CCLK and AT+CALA
(for example 2s after ^SYSSTART has been output).
•
Alarm settings on ASC0:
∗
An individual <text> message can be stored, but only one time setting applies.
The total number of alarm events returned by the read command AT+CALA? will always be <n>=0, no
matter whether different text messages are stored.
∗
When the alarm is timed out and executed, the ME sends the URC message. The alarm time will be reset
to "00/01/01,00:00:00".
Examples:
Example 1
You may want to configure a reminder call for July 31, 2005, at 9.30h, including the message "Good Morning".
AT+CALA="05/07/31,09:30:00",0,0,"Good Morning"
OK
Do not switch off the GSM engine. When the alarm is executed the ME returns the following URC:
+CALA: Good Morning
Example 2
To set a fresh alarm using the same message as in Example 1, simply enter date and time. <n>, <type>, <text>,
<tlength> can be omitted:
AT+CALA="05/07/31,08:50:00"
OK
When the alarm is executed the URC comes with the same message:
+CALA: Good Morning
Example 3
To enable the ME to wake up into Airplane mode; e.g., on July 20, 2005, at 8.30h, enter:
AT+CALA="05/07/20,08:30:00"
OK
Next, power down the ME:
AT^SMSO
^SMSO: MS OFF
OK
^SHUTDOWN
When the alarm is executed the ME wakes up to Airplane mode and displays a URC. If available, this line is
followed by the individual <text> most recently saved. If no individual message was saved only the first line
appears.
"^SYSSTART AIRPLANE MODE"
+CALA: Good Morning
Example 4
To delete an alarm before its scheduled time is reached, enter an empty string for the <time> parameter. This will
restore the default time and clear any individual message defined with <text>.
AT+CALA=" "
OK
AT+CALA?
+CALA: "00/01/01, 00:00:00" , 0,0, " "
OK
Multi-Tech Systems, Inc. AT Commands for EDGE Modems (S000371G)
Chapter 17 – Hardware-Related Commands
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