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LZT 123 7263 R1C
18. Supplementary Services
18.1 AT+CPIN PIN Control
See 3.26, AT+CPIN PIN Control
18.2 AT+CACM Accumulated Call Meter
Resets the Advice of Charge related accumulated call meter value in
SIM file EF
ACM
. ACM contains the total number of home units for both
the current and preceding calls. SIM PIN2 is usually required to reset
the value. If setting fails in an ME error, +CME ERROR: <err> is
returned. See “+CME ERROR (Mobile Equipment Error Code)”, page
85.
Note! This command must take into account what line is chosen with
AT*ELIN.
Read command returns the current value of ACM.
Description Command Possible Responses
Reset the ACM
(Accumulated Call
Meter) value on the
SIM
AT+CACM=[<passwd>] • +CME ERROR: <err>
•OK
•ERROR
Show the current
setting
AT+CACM? • +CACM: <acm>
+CME ERROR: <err>
•OK
•ERROR
Show if the command
is supported
AT+CACM=? • +CME ERROR: <err>
•OK
•ERROR
<passwd> Description
String type SIM-PIN2
<acm> Description
String type Accumulated call meter value similarly coded as <ccm>
under +CAOC