ETSI TS 131 103 V15.5.1 (2020-01)

ETSI TS 131 103 V15.5.1 (2020-01)






TECHNICAL SPECIFICATION
Digital cellular telecommunications system (Phase 2+) (GSM);
Universal Mobile Telecommunications System (UMTS);
LTE;
5G;
Characteristics of the IP Multimedia Services
Identity Module (ISIM) application
(3GPP TS 31.103 version 15.5.1 Release 15)

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3GPP TS 31.103 version 15.5.1 Release 15 1 ETSI TS 131 103 V15.5.1 (2020-01)



Reference
RTS/TSGC-0631103vf51
Keywords
5G,GSM,LTE,UMTS
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DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its Members.

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®
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ETSI

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3GPP TS 31.103 version 15.5.1 Release 15 2 ETSI TS 131 103 V15.5.1 (2020-01)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (https://ipr.etsi.org/).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Trademarks
The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.
ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no
right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does
not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.
Legal Notice
This Technical Specification (TS) has been produced by ETSI 3rd Generation Partnership Project (3GPP).
The present document may refer to technical specifications or reports using their 3GPP identities. These shall be
interpreted as being references to the corresponding ETSI deliverables.
The cross reference between 3GPP and ETSI identities can be found under http://webapp.etsi.org/key/queryform.asp.
Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
ETSI

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3GPP TS 31.103 version 15.5.1 Release 15 3 ETSI TS 131 103 V15.5.1 (2020-01)
Contents
Intellectual Property Rights . 2
Legal Notice . 2
Modal verbs terminology . 2
Foreword . 5
Introduction . 5
1 Scope . 6
2 References . 6
3 Definitions, symbols, abbreviations and coding conventions . 8
3.1 Definitions . 8
3.2 Symbols . 8
3.3 Abbreviations . 8
3.4 Coding Conventions . 9
4 Files . 10
4.1 Contents of the EFs at the MF level . 10
4.2 Contents of files at the ISIM ADF (Application DF) level . 10
4.2.1 Void . 10
4.2.2 EF (IMS private user identity) . 10
IMPI
4.2.3 EF (Home Network Domain Name) . 11
DOMAIN
4.2.4 EF (IMS public user identity) . 11
IMPU
4.2.5 EF (Administrative Data) . 12
AD
4.2.6 EF (Access Rule Reference) . 13
ARR
4.2.7 EFIST (ISIM Service Table) . 14
4.2.8 EF (P-CSCF Address) . 15
P-CSCF
4.2.9 EF (GBA Bootstrapping parameters) . 16
GBABP
4.2.10 EF (GBA NAF List). 17
GBANL
4.2.11 EF (NAF Key Centre Address) . 18
NAFKCA
4.2.12 EF (Short messages) . 18
SMS
4.2.13 EFSMSS (SMS status) . 20
4.2.14 EF (Short message status reports) . 20
SMSR
4.2.15 EF (Short message service parameters) . 21
SMSP
4.2.16 EF (UICC IARI) . 22
UICCIARI
4.2.17 EF (From Preferred) . 23
FromPreferred
4.2.18 EF (IMS Configuration Data) . 23
IMSConfigData
4.2.19 EFXCAPConfigData (XCAP Configuration Data) . 25
4.2.20 EF (WebRTC URI). 29
WebRTCURI
4.3 ISIM file structure . 29
4.4 Contents of EFs at the TELECOM level . 30
4.4.1 EF (Public Service Identity of the SM-SC) . 30
PSISMSC
4.5 Contents of DFs at the TELECOM level . 30
4.5.1 Contents of files at the DFMCS level . 30
5 Application protocol . 30
5.1 ISIM management procedures . 31
5.1.1 Initialisation . 31
5.1.1.1 ISIM application selection . 31
5.1.1.2 ISIM initialisation . 31
5.1.2 ISIM Session termination . 32
5.1.3 ISIM application closure . 32
5.1.4 UICC presence detection . 32
5.1.5 Administrative information request . 32
5.2 ISIM security related procedures . 32
5.2.1 Authentication procedure . 32
5.2.2 IMPI request . 32
ETSI

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3GPP TS 31.103 version 15.5.1 Release 15 4 ETSI TS 131 103 V15.5.1 (2020-01)
5.2.3 IMPU request . 32
5.2.4 SIP Domain request . 32
5.2.5 Void . 32
5.2.6 ISIM Service Table request . 32
5.2.7 P-CSCF address request . 33
5.2.8 Generic Bootstrapping architecture (Bootstrap) . 33
5.2.9 Generic Bootstrapping architecture (NAF Derivation) . 33
5.2.10 HTTP-Digest security request. 33
5.2.11 NAF Key Centre Address request . 33
5.3 Subscription related procedures . 33
5.3.1 SM-over-IP . 33
5.3.2 Communication Control for IMS by ISIM . 33
5.3.3 UICC access to IMS . 33
5.3.4 From Preferred related procedures . 34
5.3.5 IMS Configuration Data related procedures . 34
5.3.6 XCAP Configuration Data related procedures . 34
5.4 MCS related procedures . 34
5.5 WebRTC related procedures . 34
6 Security features . 34
6.1 User verification and file access conditions . 34
7 ISIM Commands . 35
7.1 AUTHENTICATE . 35
7.1.1 Command description . 35
7.1.1.1 IMS AKA security context . 35
7.1.1.2 GBA security context (Bootstrapping Mode) . 36
7.1.1.3 GBA security context (NAF Derivation Mode) . 36
7.1.1.4 HTTP-Digest security context . 37
7.1.1.5 Local Key Establishment security context (Key Derivation mode) . 37
7.1.1.6 Local Key Establishment security context (Key Availability Check mode) . 38
7.1.2 Command parameters and data . 38
7.1.2.1 IMS AKA security context . 40
7.1.2.2 HTTP Digest security context . 41
7.1.2.3 GBA security context (Bootstrapping Mode) . 41
7.1.2.4 GBA security context (NAF Derivation Mode) . 42
7.1.2.5 Local Key Establishment security context (All Modes) . 42
7.1.2.5.1 Local Key Establishment security context (Key Derivation mode). 42
7.1.2.5.2 Local Key Establishment security context (Key Availability Check mode) . 44
7.1.3 Status Conditions Returned by the ISIM . 45
7.1.3.1 Security management . 45
7.1.3.2 Status Words of the Commands . 45
7.2 GET CHALLENGE . 46
8 Void . 46
Annex A (informative): EF changes via Data Download or USAT applications . 47
Annex B (informative): Tags defined in 31.103 . 48
Annex C (informative): Suggested contents of the EFs at pre-personalization . 49
Annex D (informative): List of SFI Values . 50
D.1 List of SFI Values at the ISIM ADF Level . 50
Annex E (informative): ISIM Application Session Activation / Termination . 51
Annex F (informative): Change History . 52
History . 55

ETSI

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3GPP TS 31.103 version 15.5.1 Release 15 5 ETSI TS 131 103 V15.5.1 (2020-01)
Foreword
rd
This Technical Specification (TS) has been produced by the 3 Generation Partnership Project (3GPP).
The contents of the present document are subject to continuing work within the TSG and may change following formal
TSG approval. Should the TSG modify the contents of the present document, it will be re-released by the TSG with an
identifying change of release date and an increase in version number as follows:
Version x.y.z
where:
x the first digit:
1 presented to TSG for information;
2 presented to TSG for approval;
3 or greater indicates TSG approved document under change control.
y the second digit is incremented for all changes of substance, i.e. technical enhancements, corrections,
updates, etc.
z the third digit is incremented when editorial only changes have been incorporated in the document.
Introduction
The present document defines the IM Services Identity Module (ISIM) application. This application resides on the
UICC, an IC card specified in TS 31.101 [3]. In particular, TS 31.101 [3] specifies the application independent
properties of the UICC/terminal interface such as the physical characteristics and the logical structure.
TS 31.101 [3] is one of the core documents for this specification and is therefore referenced in many places in the
present document.
ETSI

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3GPP TS 31.103 version 15.5.1 Release 15 6 ETSI TS 131 103 V15.5.1 (2020-01)
1 Scope
The present document defines the ISIM application for access to IMS services.
The present document specifies:
- specific command parameters;
- file structures;
- contents of EFs (Elementary Files);
- security functions;
- application protocol to be used on the interface between UICC (ISIM) and Terminal.
This is to ensure interoperability between an ISIM and Terminal independently of the respective manufacturer, card
issuer or operator.
The present document does not define any aspects related to the administrative management phase of the ISIM. Any
internal technical realisation of either the ISIM or the Terminal is only specified where these are reflected over the
interface. The present document does not specify any of the security algorithms that may be used.
2 References
The following documents contain provisions that, through reference in this text, constitute provisions of the present
document.
- References are either specific (identified by date of publication and/or edition number or version number) or
non-specific.
- For a specific reference, subsequent revisions do not apply.
- For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including
a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same
Release as the present document.
[1] 3GPP TS 21.111: "USIM and IC Card Requirements".
[2] 3GPP TS 31.102: "Characteristics of the USIM Application".
[3] 3GPP TS 31.101: "UICC-Terminal Interface, Physical and Logical Characteristics".
[4] 3GPP TS 33.102: "3G Security; Security Architecture".
[5] 3GPP TS 33.103: "3G Security; Integration Guidelines".
[6] ISO/IEC 7816-4: "Identification cards - Integrated circuit cards,Part 4: Organization, security and
commands for interchange".
[7] Void.
[8] Void.
[9] 3GPP TS 23.003: "Numbering, Addressing and Identification".
[10] Void.
[11] Void.
[12] 3GPP TS 25.101: "UE Radio Transmission and Reception (FDD)".
[13] 3GPP TS 23.228: "IP Multimedia Subsystem (IMS); Stage 2".
ETSI

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3GPP TS 31.103 version 15.5.1 Release 15 7 ETSI TS 131 103 V15.5.1 (2020-01)
[14] 3GPP TS 33.203: "3G security; Access security for IP-based services".
[15] 3GPP TS 24.228: "Signalling flows for the IP multimedia call control based on SIP and SDP;
Stage 3".
[16] IETF RFC 3261: "SIP: Session Initiation Protocol".
[17] 3GPP TS 23.038: "Alphabets and language-specific information".
[18] Void
[19] 3GPP TS 51.011 Release 4: "Specification of the Subscriber Identity Module - Mobile Equipment
(SIM-ME) interface".
[20] ISO/IEC 8825-1 (2008): "Information technology – ASN.1 encoding rules : Specification of Basic
Encoding Rules (BER), Canonical Encoding Rules (CER) and Distinguished Encoding Rules
(DER)".
[21] 3GPP TS 22.101: "Service aspects; Service principles".
[22] Void.
[23] ETSI TS 101 220: "Smart cards; ETSI numbering system for telecommunication application
providers".
[24] IETF RFC 2486: "The Network Access Identifier".
[25] 3GPP TS 33.220: "Generic Authentication Architecture (GAA); Generic bootstrapping
architecture".
[26] IETF RFC 2617: "HTTP Authentication: Basic and Digest Access Authentication".
(http://www.ietf.org/rfc/rfc2617.txt)
[27] IETF RFC 3629 (2003): "UTF-8, a transformation format of ISO 10646".
[28] 3GPP TS 33.110: "Key establishment between a Universal Integrated Circuit Card (UICC) and a
terminal".
[29] 3GPP TS 23.040: "Technical realization of the Short Message Service (SMS)".
[30] 3GPP TS 24.011: "Point-to-Point (PP) Short Message Service (SMS) support on mobile radio
interface".
[31] 3GPP TS 31.111: "USIM Application Toolkit (USAT)".
[32] 3GPP TS 24.229: "IP multimedia call control protocol based on Session Initiation Protocol (SIP)
and Session Description Protocol (SDP); Stage 3".
[33] 3Void
[34] 3GPP TS 24.607: "Originating Identification Presentation (OIP) and Originating Identification
Restriction (OIR) using IP Multimedia (IM) Core Network (CN) subsystem; Protocol
specification".
[35] 3GPP TS 24.167: "3GPP IMS Management Object (MO); Stage 3".
[36] 3GPP TS 24.341: "Support of SMS over IP networks; Stage 3".
[37] OMA-DDS-DM_ConnMO_3GPPPS-V1_0-20081024-A: " Standardized Connectivity
Management Objects 3GPP Packet Switched Bearer Paramaters".
[38] OMA-DDS-DM_ConnMO-V1_0-20081107-A: " Standardized Connectivity Management
Objects".
[39] 3GPP TS 24.424: "Management Object (MO) for Extensible Markup Language (XML)
Configuration Access Protocol (XCAP) over the Ut interface for Manipulating Supplementary
Services (SS)".
ETSI

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3GPP TS 31.103 version 15.5.1 Release 15 8 ETSI TS 131 103 V15.5.1 (2020-01)
[40] 3GPP TS 24.623: "Extensible Markup Language (XML) Configuration Access Protocol (XCAP)
over the Ut interface for Manipulating Supplementary Services".
[41] OMA OMA-TS-XDM_MO-V1_1-20080627-A: "OMA Management Object for XML Document
Management".
[42] void.
[43] 3GPP TS 24.483: "Mission Critical Services(MCS) Management Object (MO)".
3 Definitions, symbols, abbreviations and coding
conventions
3.1 Definitions
For the purposes of the present document, the following terms and definitions apply:
ISIM: application residing on the UICC, an IC card specified in TS 31.101 [3]
In particular, TS 31.101 [3] specifies the application independent properties of the UICC/terminal interface such as the
physical characteristics and the logical structure
The AID of ISIM is defined in ETSI TS 101 220 [23] and is stored in EF .
DIR
ADM: access condition to an EF which is under the control of the authority which creates this file
3.2 Symbols
For the purposes of the present document, the following symbols apply:
|| Concatenation
⊕ Exclusive or
f1 Message authentication function used to compute MAC
f1* A message authentication code (MAC) function with the property that no valuable information can
be inferred from the function values of f1* about those of f1, . , f5 and vice versa
f2 Message authentication function used to compute RES and XRES
f3 Key generating function used to compute CK
f4 Key generating function used to compute IK
f5 Key generating function used to compute AK
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
rd
3GPP 3 Generation Partnership Project
AC Access Condition
ADF Application Dedicated File
AID Application IDentifier
AK Anonymity Key
AKA Authentication and Key Agreement
ALW ALWays
AMF Authentication Management Field
ASN.1 Abstract Syntax Notation One
AuC Authentication Centre
AUTN AUthentication TokeN
BER-TLV Basic Encoding Rule - TLV
B-TID Bootstrapping Transaction IDentifier
CK Cipher Key
DF Dedicated File
ETSI

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3GPP TS 31.103 version 15.5.1 Release 15 9 ETSI TS 131 103 V15.5.1 (2020-01)
EF Elementary File
FFS For Further Study
FQDN Fully Qualified Domain Name
HE Home Environment
HN Home Network
IARI IMS Application Reference Identifier
ICC Integrated Circuit Card
ID IDentifier
IK Integrity Key
IM IP Multimedia
IMPI IM Private Identity
IMPU IM PUblic identity
IMS IP Multimedia Subsystem
ISIM IM Services Identity Module
K long-term secret Key shared between the ISIM and the AuC
KSI Key Set Identifier
LI Language Indication
LSB Least Significant Bit
MAC Message Authentication Code
MCDa
...