GM29 INTEGRATOR’S MANUAL
236
LZT 123 7361 R1A
16.3 AT+CAMM Accumulated Call Meter Maximum

Sets the Advice of Charge related accumulated call meter maximum

value in SIM file EFACMmax. ACMmax contains the maximum number

of home units allowed to be consumed by the subscriber. When ACM

(refer +CACM) reaches ACMmax calls are prohibited. SIM PIN2 is

usually required to set the value. If setting fails in an ME error, +CME

ERROR: <err> is returned.

Read command returns the current value of ACMmax.

Description Command Possible Responses
Set command sets the
Advice of Charge
related accumulated
call meter maximum
value in SIM file
EFACMmax
AT+CAMM=[<acmmax>
[,<passwd>]]
•+CME ERROR: <err>
•OK
•ERROR
Read the current
value
AT+CAMM? +CAMM:
<acmmax>
+CME ERROR: <err>
•OK
•ERROR
Test if the command if
supported
AT+CAMM=? •+CME ERROR: <err>
•OK
•ERROR
<acmmax> Description
String type Accumulated call meter maximum value similarly coded
as <ccm> under +CAOC; value zero disables ACMmax
feature
<passwd> Description
String type SIM PIN2