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9.
Supplementary Service Commands
The AT Commands described in this chapter are related to the Supplementary Services offered by the GSM net-
work.
9.1
AT+CACM Accumulated call meter (ACM) reset or query
Syntax
Test Command
AT+CACM=?
Response(s)
OK
Read Command
AT+CACM?
Response(s)
+CACM:
<acm>
OK
ERROR
+CME ERROR: <err>
Write Command
AT+CACM=[<passwd>]
Response(s)
OK
ERROR
+CME ERROR: <err>
Reference(s)
GSM 07.07
Command Description
The read command returns the current ACM value.
The write command resets the Advice of Charge related to the accumulated call meter (ACM) value in SIM file
EF(ACM). ACM contains the total number of home units for both the current and preceding calls.
Parameter Description
(str)
<acm>
Three bytes of the current ACM value in hexadecimal format (e.g. "00001E" indicates decimal value 30) 000000
- FFFFFF.
(str)
<passwd>
SIM PIN2
MC55_ATC_V04.00
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