Rainbow Electronics FARGO MAESTRO 100 (with TCP_IP) - Manual (Page 543)

Supplementary Services Commands
Accumulated Call Meter Maximum+CAMM
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WM_DEV_OAT_UGD_049 - 001 VOLUME 3 August 23, 2007
20.13 Accumulated Call Meter Maximum+CAMM
20.13.1 Description
The set command sets the Advice Of Charge related to Accumulated Call Meter
maximum value in SIM file EF-ACMmax. 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.
20.13.2 Syntax
Action command
AT+CAMM=,
OK
Read command
AT+CAMM?
+CAMM:
OK
Test command
AT+CAMM=?
OK