1、GSM GSM 02.33 January 1997 Version 5.0.0 Source: ETSI TC-SMG _ Reference: TS/SMG-l00233Q ICs: 33.020 Key words: Digital cellular telecommunications system, Global System for Mobile communications (GSM) GLOBAL SYSTEM FOR MORILE COMMUNICATIONS Digital cellular telecommunications system (Phase 2+); Law
2、ful Interception - stage 1 (GSM 02.33) ETSI European Telecommunications Standards Institute ETSI Secretariat Postal address: F-O6921 Sophia Antipolis CEDEX - FRANCE Office address: 650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE X.400: c=fr, a=atlas, p=etsi, s=secretariat - Internet: s
3、ecretariatetsi.fr Tel.: +33 4 92 94 42 O0 - Fax: +33 4 93 65 47 16 Copyright Notification: No pari may be reproduced except as authorized by written permission. The copyright and the foregoing restriction extend to reproduction in all media. Q European Telecommunications Standards Institute 1997. Al
4、l rights reserved. STDmETSI GSM 02.33-ENGL 1777 m 3400855 O1725b7 2b3 m Page 2 GSM 02.33 version 5.0.0: January 1997 Whilst every care has been taken in the preparation and publication of this document, errors in content, typographical or otherwise, may occur. If you have comments concerning its acc
5、uracy, please write to “ETSI Editing and Committee Support Dept.“ at the address shown on the title page. STD*ETSI GSM 02-33-ENGL 1997 W 3400855 OL725bB LTT Page3 GSM 02.33 version 5.0.0: January 1997 Contents Foreword . 5 1 2 3 4 5 6 7 8 9 Scope 7 References 7 Definitions and abbreviations 7 Defini
6、tions 7 3.1 3.2 Abbreviations . 7 Description 8 4.1 General principle 8 4.2 Tele and bearer services crS/BS) . 8 Supplementary services (SS) 8 4.2.2.1 General 8 4.2.2.2 Impact 8 4.2.2.3 Intercept of forwarding calls - option 8 4.2.2.4 Intercept of calls placed on HOLD (call waiting and multi party s
7、ervices) - option 8 4.2.2.5 Network operator specific services 8 4.2.3 Other activities . 9 Applicability to telecommunications services . 8 4.2.1 4.2.2 Normal Operation 9 5.1 Intercept administration . 9 5.1.1 Activation . 9 5.1.2 Deactivation . 9 5.1.3 Security 9 5.2 Intercept invocation 9 5.2.1 G
8、eneral 9 5.2.1.1 Invocation events for lawful interception 9 5.2.1.2 Invocation of interception regarding normal GSM service . 9 5.2.1.3 Correlation of information and product 10 Intercept related information 10 5.2.2.1 Intercept related information events 10 5.2.2.2 Intercept related information pr
9、ovided to the LEA . 10 5.2.2.3 Delivery of intercept related information 10 5.2.3 intercept product . 11 5.2.3.1 Speech and single channel circuit switched datdfax 11 5.2.3.2 Delivery of intercept product 11 5.2.3.3 SMS . 11 Correlation between intercept product and intercept related information 11
10、Security related to intercept invocation 11 5.2.2 5.2.4 5.2.5 Exceptional procedures . 11 Interworking considerations . 11 Charging aspects 12 8.1 Charging principles 12 8.2 Charging characteristics 12 8.2.1 Activation of the target . 12 8.2.2 Deactivation of the target 12 8.2.3 Intercept invocation
11、 . 12 Minimum Service Requirements . 12 History 13 STD-ETSI GSM 02.33-ENGL 1997 m 3400855 01725b9 03b m Page 4 GSM 02.33 version 5.0.0: January 1997 blank page Page 5 GSM 02.33 version 5.0.0: January 1997 STDeETSI GSM 02*33-ENGL 1777 3400855 0372570 858 Foreword This Global System for Mobile communi
12、cations technical specification (GTS) has been produced by the Special Mobile Group (SMG) Technical Committee (TC) of the European Telecommunications Standards Institute (ETSI). This specification defines the stage 1 description of a lawful interception feature within the digital cellular telecommun
13、ications system (Phase 2/Phase 2+). GSM technical specifications are produced by TC-SMG to enable the GSM Phase 2+ specifications to become publicly available, prior to submission for the formal ETSI standards approval procedure to become European Telecommunications Standards (ETS). This ensures the
14、 earliest possible access to GSM Phase 2+ specifications for all manufacturers, network operators and implementors of the Global System for Mobile communications. The contents of this GTS are subject to continuing work within TC-SMG and may change following formal TC-SMG approval. Should TC-SMG modi
15、fy the contents of this GTS it will then be republished by ETSI with an identifying change of release date and an increase in version number as follows: Version 5.x.y where: y the third digit is incremented when editorial only changes have been incorporated in the specification; x the second digit i
16、s incremented for all other types of changes, .e. technical enhancements, corrections, updates, etc. Reference is made within this GTS to GSM-TSs (note). NOTE: TC-SMG has produced documents which give the technical specifications for the implementation of the digital cellular telecommunications syst
17、em. Historically, these documents have been identified as GSM Technical Specifications (GSM-TSs). These TSs may have subsequently become i-ETSs (Phase l), or ETSs/ETSI Technical Reports (ETRs) (Phase 2). TC-SMG has also produced ETSI GSM TSs which give the technical specifications for the implementa
18、tion of Phase 2+ enhancements of the digital cellular telecommunications system. These version 5.x.x GSM Technical Specifications may be referred to as GTSs. STD-ETSI GSM 02-33-ENGL 1777 3400855 0172571 774 Page 6 GSM 02.33 version 5.0.0: January 1997 blank page Page 7 GSM 02.33 version 5.0.0: Janua
19、ry 1997 STD-ETSI GSM 02.33-ENGL 1997 3Li00855 0372572 620 1 Scope This Global System for Mobile communications technical specification (GTS) provides the stage 1 description for a lawful interception function to be implemented in a given GSM PLMN in order for a network operator to be able to fulfil
20、national lawful requirements. It shall be noted that nationai variation may exist but it is not the intention for this specification to encompass all of them. The purpose of this specification is to cover the options which may be selectable according to national regulations or as required by the GSM
21、 PLMN operator in co-operation with their suppliers. In the preparation of this specification general reference was made to the European Union Council Resolution, January 1995: “International Requirements for the Lawful Interception of Telecommunications“. 2 References This specification incorporate
22、s by dated and undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this specifica
23、tion only when incorporated in it by amendment or revision. For undated references, the latest edition of the publication referred to applies. 31 GSM O1 .O4 (ETR 350): “Digital cellular telecommunications system (Phase 2+); Abbreviations and acronyms“. The European Union Council Resolution reference
24、: “International Requirements for The Lawful Interception of Telecommunications“ (January 1995), (JA124-Rev 2, 8197/2/95). CCITT Recommendation G.711: “Pulse Code Modulation (PCM) of voice frequencies“. 3 Definitions and abbreviations 3.1 Definitions target: Is the subject of an interception. Differ
25、ent identities might be used (.e. Mobile Station International ISDN number (MSISDN), optionally International Mobile Subscriber Identity (IMSI) or International Mobile Equipment Identity (I M El). intercept product: Data sent or received by the target, such as speech, fax or data generated by the us
26、ers of the telecommunication services. intercept related information: Collection of information associated to telecommunication services involving the target. law enforcement agency: A body authorized by law to carry out telecommunication interceptions. 3.2 Abbreviations In addition to those below,
27、abbreviations used in the specification are listed in GSM 01.04. LEA: Law enforcement agency STD-ETSI GSM 02.33-ENGL 1777 3900855 0372573 5b7 Page 8 GSM 02.33 version 5.0.0: January 1997 4 Description 4.1 General principle GSM Public Lands Mobile Network (PLMN) shall provide access to the intercept
28、product and the intercept related information of the mobile target on behalf of Law Enforcement Agencies (LEAS). A mobile target in a given PLMN can be a subscriber of that PLMN, or a subscriber of another PLMN. The intercept product and the related information can only be delivered for activities o
29、n that given PLMN. An unambiguous correlation shall be established between the intercept related information and the intercept product. The intercept related information and the intercept product shall be delivered in as near real time as possible. 4.2 Applicability to telecommunications services 4.
30、2.1 Tele and bearer services (TSIBS) All tele and bearer services are subject to interception of the target. Interception is applicable to Short Message Service (SMS) point-to-point, but not SMS Cell Broadcast (SMSCS). Impact of application to the Voice Group Call Service (VGCS) and the Voice Broadc
31、ast Service (VBS) is for further study. 4.2.2 Supplementary services (SS) 4.2.2.1 General It shall be possible to report any activities regarding supplementary services to the LEA. It may be a national or operator/supplier option to implement this function. 4.2.2.2 Impact The application of the foll
32、owing supplementary services has no impact on the interception function: Calling Line Identity PrecentationlCalling Line Identity Restriction (CLIP/CLIR), Connected Line Identity Presentation/Connected Line Identity Restriction (COLP/COLR), Call Barring services, Advice of Charge services, Closed Us
33、er Group (CUG), Completion of Calls to Busy Subscriber (CCBS). 4.2.2.3 Intercept of forwarding calls - option Activation by the target of any Call Forwarding service, Call Deflection, or Explicit Call Transfer (ECT) shall result in the capability to intercept the forwarded, diverted or transferred p
34、roduct. It may be a national or operator/supplier option which of these are implemented. 4.2.2.4 Intercept of calls placed on HOLD (call waiting and multi party services) - option In some countries it is a national requirement that when the target puts other parties on HOLD the other parties product
35、 will be interrupted. When the other parties rejoin the call, the intercept product shall be reconnected. 4.2.2.5 Network operator specific services Impact on a network operators specific services is not covered in this specification. Page 9 GSM 02.33 version 5.0.0: January 1997 STD-ETSI GSM 02.33-E
36、NGL 1977 3400855 0372574 4T3 4.2.3 Other activities Location information in the format of cell global identity (CGI) should be available with call related activities. Conversion to other formats of location information (e.g. latitude/longitude) is not covered by this specification. It is a matter of
37、 national or operator/supplier option whether location information shall be provided in connection with non call related activities, e.g. location update. 5 Normal Operation 5.1 Intercept administration A secure means of administrating the service by the PLMN operator and/or intercept requesting ent
38、ity is necessary. This mechanism shall provide means to activate, deactivate, show, or list targets in the GSM PLMN as quick as technically possible. The function shall be policed by appropriate authentication and audit procedures. 5.1.1 Activation As a result of the activation it shall be possible
39、to request for the specified target either the intercept product, the intercept related information or both, and the LEA destination addresses for the delivery of the intercept product and intercept related information if required. These shall be selectable on a PLMN basis according to national opti
40、ons. 5.1.2 Deactivation As a result of deactivation it shall be possible to stop all interception activities for the specified target. 5.1.3 Security The intercept function shall only be accessible by authorized personnel. An audit log of use of the intercept function (successful or failed) shall be
41、 maintained, accessible only to authorized users; No indication shall be given to any PLMN staff except authorized personnel that the intercept function has been activated on a target. 5.2 Intercept invocation 5.2.1 General 5.2.1.1 Invocation events for lawful interception Lawful interception is inv
42、oked when: - - - - a voice call is requested - either originated from or terminated to the target; a circuit switched data call is requested - either originated from or terminated to the target; location information related to the subscriber is modified by the subscriber attaching or detaching from
43、the network, or if there is a change in location, (see subclause 4.2.3); an SMS transfer is requested - either originated from or terminated to the target. 5.2.1.2 Invocation of interception regarding normal GSM service The invocation of lawful interception shall not alter the operation of a targets
44、 services or provide indication to any party involved in communication with the target. Lawful interception shall not alter the standard function of GSM network elements. If lawful interception is activated during a call, the call shall not be intercepted. If lawful interception is deactivated all o
45、ngoing intercept activities shall continue till they are completed. STDmETSI GSM 02.33-ENGL 1997 m 3400855 0372575 33T Page 10 GSM 02.33 version 5.0.0: January 1997 5.2.1.3 Correlation of information and product When lawful interception is invoked, intercept related information and/or intercept prod
46、uct shall be sent to the LEA. Where both intercept related information and intercept product are sent to the LEA, then these two types of information shall be able to be correlated by the LEA, and they should be sent to the LEA in as near real time as possible. 5.2.2 Intercept related information Th
47、is subclause describes the service requirements for the provision of intercept related information when the target is using the following basic services: 5.2.2.1 Intercept related information events Intercept related information concerning call progress may be provided to the LEA when the target is
48、using the following basic services: - - - - - - telephony - teleservice 11 ; alternate speech and facsimile - teleservice 61 ; automatic facsimile group 3 - teleservice 62; data services - bearer services 2x, 3x; alternate speech and data - bearer service 61 ; speech followed by data - bearer servic
49、e 81. The following intercept related information events concerning call progress may, if applicable to the Tele Service/Bearer Service (TS/BS) and available, be provided to the LEA: - the call establishment attempt; - - - the answer of the call; the disconnecting of the call; changes of location of the target. For the case of an SMS transaction the intercept related information is provided in conjunction with the SMS intercepted product to the LEA (see subclause 5.2.3.3) 5.2.2.2 Intercept related information provided to the LEA The specific informat
