Chapter 3: AT Commands Reference
December 31, 2007 AT Commands Reference Manual 3-59
The following table shows the +CAMM parameters.
Example
AT+CAMM=?
OK
AT+CAMM="FFFFFF","2222"
OK
AT+CAMM?
+CAMM: "FFFFFF"
OK
Command Type Syntax Response/Action Remarks
Set
+CAMM=[<acm
max>,<passwd>]
OK
+CME ERROR: <err>
The Set command sets the
accumulated call meter maximum
value. SIM PIN2 is required. The value
that is set remains after a power cycle.
Note:
This command is activated if
Advice of Charge is supported
by the network.
Read
+CME ERROR: <err>
The Read command displays the
current value of ACMmax.
Test
+CAMM=? OK
The Test command indicates whether
the +CAMM command is functioning.
Table 3-28: +CAMM Parameters
<Parameter> Description
<acmmax> Accumulated call meter maximum value (similar to CCM; Refer to “+CAOC, Advice
of Charge”, page 3-55)
ccm>
String type; three bytes of the current call meter value in hexadecimal format (for
example, 00001E indicates a decimal value of 30). Value is given in home units; bytes
are similarly coded as the ACMmax value in the SIM.
Range is from 00001 to FFFFFF.
0 Disables ACMmax (default)
<passwd> SIM PIN2 password
Maximum string length is 8 characters. If this value is exceeded, the command
terminates in an error. If PIN2 is incorrect, "+CME ERROR: incorrect password" is
displayed.
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