4.2.75 EFVBS (Voice Broadcast Service)

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

If service n°58 is "available", this file shall be present.

This EF contains a list of those VBS group identifiers the user has subscribed to. The elementary file is used by the ME for broadcast call establishment and broadcast call reception.

Identifier: ‘6FB3’

Structure: transparent

Optional

File size: 4n bytes, (1 ≤ n ≤ 50)

Update activity: low

Access Conditions:

READ PIN

UPDATE ADM

DEACTIVATE ADM

ACTIVATE ADM

Bytes

Description

M/O

Length

1 to 4

Group ID 1

M

4 bytes

5 to 2

Group ID 2

O

4 bytes

:

:

:

:

(4n‑3) to 4n

Group ID n

O

4 bytes

Group ID

Contents: VBS Group ID, according to TS 23.003 [25]

Coding: The VBS Group ID is of a variable length with a maximum length of 8 digits. Each VBS Group ID is coded on four bytes, with each digit within the code being coded on four bits corresponding to BCD code. If a VBS Group ID of less than 8 digits is chosen, then the unused nibbles shall be set to ‘F’. VBS Group ID Digit 1 is the most significant digit of the Group ID.

Byte 1:

b8

b7

b6

b5

b4

b3

b2

b1

LSB of Digit 1 of Group ID 1

:

:

MSB of Digit 1 of Group ID 1

LSB of Digit 2 of Group ID 1

:

:

MSB of Digit 2 of Group ID 1

Byte 2:

b8

b7

b6

b5

b4

b3

b2

b1

LSB of Digit 3 of Group ID 1

:

:

MSB of Digit 3 of Group ID 1

LSB of Digit 4 of Group ID 1

:

:

MSB of Digit 4 of Group ID 1

Byte 3:

b8

b7

b6

b5

b4

b3

b2

b1

LSB of Digit 5 of Group ID 1

:

:

MSB of Digit 5 of Group ID 1

LSB of Digit 6 of Group ID 1

:

:

MSB of Digit 6 of Group ID 1

Byte 4:

b8

b7

b6

b5

b4

b3

b2

b1

LSB of Digit 7 of Group ID 1

:

:

MSB of Digit 7 of Group ID 1

LSB of Digit 8 of Group ID 1

:

:

MSB of Digit 8 of Group ID 1

:

: etc……..

Byte (4n-3) to 4n:

b8

b7

b6

b5

b4

b3

b2

b1

LSB of Digit 7 of Group ID n

:

:

MSB of Digit 7 of Group ID n

LSB of Digit 8 of Group ID n

:

:

MSB of Digit 8 of Group ID n

If storage for fewer than the maximum possible number n of VBS Group Ids, is required, the excess bytes shall be set to ‘FF’.