Siemens M20 Terminal Technical Description page 112

Siemens Information and Communication Products
Read command Response
AT^SACM TA returns the Advice of Charge supplementary service function mode and the SIM values for ac-
cumulated call meter (ACM) and accumulated call meter maximum (ACMmax).
^SACM: <n>,<acm>,<acm_max> OK
If error is related to ME functionality:
+CME ERROR: <err>
Parameter
see set command
Set command Response
AT^SACM=<n> TA sets the Advice of Charge supplementary service function mode.
OK
Parameter
<n>
<acm>
<acm_max>
<ccm>
Unsolicited result code
When activated, an unsolicited result code is sent when the CCM value changes, but not more that
every 10 seconds
+CCCM: <ccm>
Parameter
see set command
Reference Note
GSM07.07:
AT+CACM,
AT+CAMM,
AT+CAOC
Version 8 dated 15.03.00
0 suppress unsolicited result code
1 display unsolicited result code
ACM, string type; three bytes of the current ACM value in hexadecimal for-
mat (e.g. "00001E" indicates decimal value 30)
000000–FFFFFF
ACMmax, string type; three bytes of the max. ACM value in hexadecimal
format (e.g. "00001E" indicates decimal value 30)
000000
disable ACMmax feature
000001-FFFFFF
string type; three bytes of the current CCM value in hexadecimal format (e.g.
"00001E" indicates decimal value 30); bytes are coded in the same way as
ACMmax value in the SIM
000000-FFFFFF
AT command interface
A
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