> 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) |  | PIN |  | ASC0 | ASC1 | USB | MUX1 | MUX2 | MUX3 |  |  | Charge | Q | Last
> 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

> <acm>(str)

> Three bytes of the current ACM value in hexadecimal format (e.g. "00001E" indicates decimal value 30) 000000 - FFFFFF.

> <passwd>(str)

> SIM PIN2