Siemens MC55 Command Set page 219

MC55 AT Command Set
9.4 AT+CAOC
The write command sets the Advice of Charge supplementary service function mode.
Parameter Description
(num)(&V)
<mode>
0
(str)
<ccm>
Three bytes of the current CCM value in hexadecimal format (e.g. "00001E" indicates decimal value 30); bytes
are similarly coded as ACMmax value in the SIM 000000-FFFFFF.
MC55_ATC_V01.05
Confidential / Released
query CCM value
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2/10/04