4.2.35 EF_ICT (Incoming Call Timer)

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

If service n°9 is "available", this file shall be present.

This EF contains the accumulated incoming call timer duration value for the current call and previous calls. The EF is USIM specific and resides within the USIM application.

This file should have only one entry.

Structure of EF_ICT

Identifier: ‘6F82’		Structure: cyclic			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 call timer value			M		3 bytes

Coding:

Accumulated call timer value is indicated by second.

Byte 1:

		b8		b7		b6		b5		b4		b3		b2		b1
		223		222		221		220		219		218		217		216

Byte 2:

		b8		b7		b6		b5		b4		b3		b2		b1
		215		214		213		212		211		210		29		28

Byte 3:

		b8		b7		b6		b5		b4		b3		b2		b1
		27		26		25		24		23		22		21		20

For example, ’00’ ’00’ ’30’ represents 25+24.