4.2.94 EFNASCONFIG (Non Access Stratum Configuration)

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

If service n°96 is "available", this file shall be present. This EF contains some of the NAS configuration parameters defined in TS 24.368 [65]. For each of these NAS configuration parameters, a parameter provided in EFNASCONFIG shall take precedence over the corresponding parameter stored in the ME’s non-volatile memory.

Identifier: ‘6FE8’

Structure: transparent

Optional

File size: Z bytes

Update activity: low

Access Conditions:

READ PIN

UPDATE ADM

ACTIVATE ADM

DEACTIVATE ADM

Bytes

Description

M/O

Length

1 to Z

NAS configuration parameter TLV objects

M

Z bytes

NAS configuration parameter information

Description

Value

M/O/C

Length (bytes)

NAS signalling priority Tag

’80’

O

1

Length

L1

C

Note 1

NAS signalling priority value

—

C

L1

NMO I Behaviour Tag

’81’

O

1

Length

L2

C

Note 1

NMO I Behaviour value

—

C

L2

Attach with IMSI Tag

’82’

O

1

Length

L3

C

Note 1

Attach with IMSI value

—

C

L3

Minimum Periodic Search Timer Tag

’83’

O

1

Length

L4

C

Note 1

Minimum Periodic Search Timer value

—

C

L4

Extended access barring Tag

’84’

O

1

Length

L5

C

Note 1

Extended access barring value

—

C

L5

Timer T3245 Behaviour Tag

’85’

O

1

Length

L6

C

Note 1

Timer T3245 Behaviour value

—

C

L6

Override NAS signalling low priority Tag

’86’

O

1

Length

L7

C

Note 1

Override NAS signalling low priority value

—

C

L7

Override Extended access barring Tag

’87’

O

1

Length

L8

C

Note 1

Override Extended access barring value

—

C

L8

Fast First Higher Priority PLMN Search Tag

’88’

O

1

Length

L9

C

Note 1

Fast First Higher Priority PLMN value

—

C

L9

E-UTRA Disabling Allowed for EMM cause #15 Tag

’89’

O

1

Length

L10

C

Note 1

E-UTRA Disabling Allowed for EMM cause #15 Value

–

C

L10

SM_RetryWaitTime Tag

‘8A’

O

1

Length

L11

C

Note 1

SM_RetryWaitTime value

—

C

L11

SM_RetryAtRATChange Tag

‘8B’

O

1

Length

L12

C

Note 1

SM_RetryAtRATChange value

—

C

L12

Default_DCN_ID Tag

‘8C’

O

1

Length

L13

C

Note 1

Default_DCN_ID value

—

C

L13

Exception Data Reporting Allowed Tag

‘8D’

O

1

Length

L14

C

Note 1

Exception Data Reporting Allowed value

—

C

L14

RLOSPreferredPLMNList Tag

‘8E’

O

1

Length

L15

C

4n (Note 1)

RLOSPreferredPLMNList value

—

C

L15

RLOSAllowedMCCList Tag

‘8F’

O

1

Length

L16

C

2n (Note 1)

RLOSAllowedMCCList value

—

C

L16

No E-UTRA Disabling In 5GS Tag

’90’

O

1

Length

L17

C

Note 1

Note 1 : The length is coded according to ISO/IEC 8825-1 [35]

Note 2: C; if the Tag is present, this is mandatory.

– NAS signalling priority

Contents:

As described in TS 24.368 [65], used to determine the NAS signalling priority included in NAS messages.

Coding:

As defined for the NAS_SignallingPriority leaf in TS 24.368 [65].

– NMO I Behaviour

Content:

As described in TS 24.368 [65], indicates whether the "NMO I, Network Mode of Operation I" indication is applied by the UE.

Coding:

b8

b7

b6

b5

b4

b3

b2

b1

b1 value to be interpreted as defined for the NMO_I_Behaviour leaf in TS 24.368 [65].

RFU (see TS 31.101 [11])

– Attach with IMSI

Content:

As described in TS 24.368 [65], indicates whether attach with IMSI is performed when moving to a non-equivalent PLMN.

Coding:

b8

b7

b6

b5

b4

b3

b2

b1

b1 value to be interpreted as defined for the AttachWithIMSI leaf in TS 24.368 [65].

RFU (see TS 31.101 [11])

– Minimum Periodic Search Timer

Content:

As described in TS 24.368 [65], gives a minimum value in minutes for the timer T controlling the periodic search for higher prioritized PLMNs. The content applies a minimum value that may override the value in file EFHPPLMN (Higher Priority PLMN search period), as specified in TS 23.122 [31] clause 4.4.3.3.1.

Coding:

As defined for the MinimumPeriodicSearchTimer leaf in TS 24.368 [65].

– Extended access barring

Content:

As described in TS 24.368 [65], indicates whether the UE applies extended access barring.

Coding:

b8

b7

b6

b5

b4

b3

b2

b1

b1 value to be interpreted as defined for ExtendedAccessBarring leaf in TS 24.368 [65].

RFU (see TS 31.101 [11])

– Timer T3245 Behaviour

Content:

As described in TS 24.368 [65], indicates whether the timer T3245 and the related functionality is used by the UE.

Coding:

b8

b7

b6

b5

b4

b3

b2

b1

b1 value to be interpreted as defined for Timer_T3245_Behaviour leaf in TS 24.368 [65].

RFU (see TS 31.101 [11])

– Override NAS signalling low priority

Contents:

As described in TS 24.368 [65], used to determine whether the NAS signalling priority included in NAS messages can be overriden.

Coding:

b8

b7

b6

b5

b4

b3

b2

b1

b1 value to be interpreted as defined for the Override_NAS_SignallingLowPriority leaf in TS 24.368 [65].

RFU (see TS 31.101 [11])

The Override NAS signalling low priority tag and the Override Extended access barring tag shall be set to the same value, e.g., if the UE is configured to override the NAS signalling low access priority indicator, then it has also to be configured to override Extended access barring (see 3GPP TS 23.401 [69] clause 4.3.17.4).

– Override Extended access barring

Contents:

As described in TS 24.368 [65], used to determine whether the Extended access barring included in NAS messages can be overriden.

Coding:

b8

b7

b6

b5

b4

b3

b2

b1

b1 value to be interpreted as defined for the Override_ ExtendedAccessBarring leaf in TS 24.368 [65].

RFU (see TS 31.101 [11])

The Override Extended access barring tag and the Override NAS signalling low priority tag shall be set to the same value, e.g., if the UE is configured to override Extended access barring, then it has also to be configured to override the NAS signalling low access priority indicator (see 3GPP TS 23.401 [69] clause 4.3.17.4).

– Fast First Higher Priority PLMN Search

Contents:

Determine whether the UE can perform Fast First Higher Priority PLMN Search upon selecting a VPLMN as specified in 3GPP TS 23.122 [31].

Coding:

b8

b7

b6

b5

b4

b3

b2

b1

b1 value to be interpreted as defined for the FastFirstHigherPriorityPLMNSearch leaf in TS 24.368 [65].

RFU (see TS 31.101 [11])

– E-UTRA Disabling Allowed for EMM cause #15

Contents:

Determine whether the UE is allowed to disable the E-UTRA capability when it receives the Extended EMM IE with value cause "E-UTRAN not allowed" as specified in 3GPP TS 24.301 [51].

Coding:

b8

b7

b6

b5

b4

b3

b2

b1

b1 value to be interpreted as defined for the EUTRADisablingAllowedforEMMcause15 leaf in 3GPP TS 24.368 [65]

RFU (see TS 31.101 [11])

– SM_RetryWaitTime

Contents:

As described in TS 24.368 [65], provides a configured UE retry wait time value applicable when in HPLMN or EHPLMN (see 3GPP TS 23.122 [31]) for controlling the UE session management retry behaviour when prior session management request was rejected by the network with cause value #8, #27, #32, #33 as specified in 3GPP TS 24.008 [9] and 3GPP TS 24.301 [51], or when prior session management request was rejected by the network with cause value #8, #27, #32, #33, #70 as specified in 3GPP TS 24.501 [104].

Coding:

b8

b7

b6

b5

b4

b3

b2

b1

bits b1 to b8 to be interpreted as defined for the SM_RetryWaitTime leaf in 3GPP TS 24.368 [65]

– SM_RetryAtRATChange

Contents:

As described in TS 24.368 [65], indicates the UE’s retry behaviour when in HPLMN or EHPLMN (see 3GPP TS 23.122 [31]) after inter-system change between S1 mode and A/Gb or Iu mode or N1 mode as specified in 3GPP TS 24.008 [9] and 3GPP TS 24.301 [51] and 3GPP TS 24.501 [104].

Coding:

b8

b7

b6

b5

b4

b3

b2

b1

b1 value to be interpreted as defined for the SM_RetryAtRATChange leaf in 3GPP TS 24.368 [65]

RFU (see TS 31.101 [11])

– Default_DCN_ID

Contents:

As described in 3GPP TS 24.368 [65], indicates the default DCN-ID which is provided by NAS to the lower layers at establishment of the NAS signalling connection as specified in 3GPP TS 24.301 [51].

Coding:

As the DCN-ID value inside the DCN-ID IEI defined in TS 24.008 [9] clause 10.5.5.35.

– Exception Data Reporting Allowed

Contents:

As described in 3GPP TS 24.368 [65], for the UE in NB-S1 mode indicates whether the UE is allowed to use the RRC establishment cause mo-ExceptionData, as specified in 3GPP TS 24.301 [51].

Coding:

b8

b7

b6

b5

b4

b3

b2

b1

b1 value to be interpreted as defined for the ExceptionDataReportingAllowed leaf in TS 24.368 [65].

RFU (see TS 31.101 [11])

– RLOSPreferredPLMNList

Contents:

As described is 3GPP TS 24.368 [65], it contains in descending priority order, a list of preferred RLOS PLMNs configured to the UE for selection of a PLMN offering access to RLOS as specified in 3GPP TS 23.122 [31].

Coding:

Bytes

Description

M/O

Length

1 to 3

1st PLMN (highest priority)

M

3 bytes

4

1st PLMN Config

M

1 byte

5 to 7

2nd PLMN

O

3 bytes

8

2nd PLMN Config

O

1 byte

9 to 11

3rd PLMN

O

3 bytes

12

3rd PLMN Config

O

1 byte

:

:

:

:

(4n-3) to (4n-1)

nth PLMN

O

3 bytes

4n

nth PLMN Config

O

1 byte

Coding of PLMN Config:

b8

b7

b6

b5

b4

b3

b2

b1

b1=0: This PLMN has higher priority than the next PLMN in the list

b1=1: This PLMN has same priority than the next PLMN in the list

RFU (see TS 31.101 [11])

– RLOSAllowedMCCList

Contents:

As described is 3GPP TS 24.368 [65], it contains a list of allowed MCC configured to the UE to allow the UE to check whether the MCC of the PLMN ID of the serving network that advertises RLOS service is present in the list and whether the MCC part of the IMSI configured in the USIM is present in the list of MCCs before initiating the RLOS connection as specified in 3GPP TS 23.122 [31].

Coding:

Bytes

Description

M/O

Length

1 to 2

1st MCC

M

2 bytes

3 to 4

2nd MCC

O

2 bytes

5 to 6

3rd MCC

O

2 bytes

:

:

:

:

(2n-1) to (2n)

nth MCC

O

2 bytes

Coding of MCC: according to TS 24.008 [9].

– A BCD value of ‘D’ in any of the MCC digits shall be used to indicate a "wild" value for that corresponding MCC digit. A value of ‘DDD’ represents "any MCC" value.

– No E-UTRA Disabling In 5GS

Contents:

As described in TS 24.368 [65], used to indicate whether E-UTRA Disabling In 5GS is disabled or enabled.

Coding:

b8

b7

b6

b5

b4

b3

b2

b1

b1 value to be interpreted as defined for NoEUTRADisablingIn5GS leaf in TS 24.368 [65].

RFU (see TS 31.101 [11])

If any of these NAS configuration parameters is neither included in EFNASCONFIG nor stored in the ME’s non-volatile memory, the default value as defined for the corresponding leaf in TS 24.368 [65] shall apply.

Unused bytes shall be set to ‘FF’.