Westermo GDW-11 - Manual (Page 125)

Supplementary Services commands 125 6615-2220
+CAMM – Accumulated call meter maximum
Description:
The set command sets the Advice of Charge related to accumulated call meter maximum
value in SIM file EFACMmax. ACMmax contains the maximum number of home units the
subscriber is allowed to spend. When ACM (see +CACM) reaches ACMmax, calls are
prohibited. SIM PIN2 is required to set the value. If setting fails in an ME error, +CME
ERROR: is returned.
The Read command returns the current value of ACMmax.
The ACMmax value (entered or displayed) is in hexadecimal format with 6 digits.
Syntax:
AT+CAMM:,
Parameters:
String type coded as under +CAOC. Value 0 disables ACMmax feature.
String type
Command example Possible responses Note
AT+CAMM=”000400”,1234 OK Request ACMmax update,
PIN2 is “1234”
AT+CAMM=”000400”,0000 +CME ERROR: 16 Request ACMmax update,
wrong PIN2”
AT+CAMM ? +CAMM: “000400” Request ACMmax value
OK ACMmax = 1024