Specifications

Smart Machine Smart Decision
SIM900_AT Commands Manual_V1.07 48 2012.12.10
value in SIM file EF (ACM max). ACM max contains the maximum
number of home units allowed to be consumed by the subscriber.
OK
ERROR
If error is related to ME functionality:
+CME ERROR: <err>
mmax>[,<passwd
>]
Parameters
<acmmax> String type (string should be included in quotation
marks); three bytes of the max. ACM value in
hex-decimal format (e.g. "00001E" indicates decimal
value 30)
000000 disable ACMmax feature
000001-FFFFFF
<passwd> String type (string should be included in quotation
marks)
SIM PIN2
Reference
GSM 07.07 [13]
Note
3.2.3 AT+CAOC Advice of Charge
AT+CAOC Advice of Charge
Response
+CAOC: (list of supported <mode>s)
OK
Test Command
AT+CAOC=?
Parameters
See Write Command
Response
+CAOC: <mode>
OK
Read Command
AT+CAOC?
Parameters
See Write Command
Write Command
AT+CAOC=<mo
de>
Response
TA sets the Advice of Charge supplementary service function mode.
If <mode>=0, TA returns the current call meter value
+CAOC: <ccm>
OK
If <mode>=1, TA deactivates the unsolicited reporting of CCM value