4.2.9 EF_ACM (Accumulated Call Meter)

31.1023GPPCharacteristics of the Universal Subscriber Identity Module (USIM) applicationRelease 17TS

If service n° 13 is "available", this file shall be present.

This EF contains the total number of units for both the current call and the preceding calls.

NOTE: The information may be used to provide an indication to the user for advice or as a basis for the calculation of the monetary cost of calls (see TS 22.086 [15]).

Identifier: ‘6F39’		Structure: cyclic			Optional
SFI: Optional
Record length: 3 bytes			Update activity: high
Access Conditions: READ PIN UPDATE PIN/PIN2 (fixed during administrative management) INCREASE PIN DEACTIVATE ADM ACTIVATE ADM
Bytes	Description			M/O		Length
1 to 3	Accumulated count of units			M		3 bytes
NOTE: If a SFI is assigned, the recommended value is ‘1C’. However cards may exist that indicate another value. Therefore the terminal shall be able to handle other values.

‑ Accumulated count of units

Contents:

value of the ACM.

Coding:

see the coding of EF_ACMmax.

If a GSM application is present on the UICC and the ACM value is to be shared between the GSM and the USIM application this file shall be shared between the two applications.