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ETSI and Lawful Interception

Robin GapeChair TC Sec WG LI

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About ETSI

• European Telecommunications Standards Institute

• A “standards factory”– market driven

• Broad industry participation

• European and Global player

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PSTN Achievements

• Technical Handover Interface– ES 201 671 v1 1999– ES 201 671 v2 2001

• Plus supporting documents– LEA Requirements (ETR 331)– Network Elements (ES 201 158)

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A Major Success

• Started with 17th January 1995 Resolution

• “Filled out” LEA requirements 1996

• Network elements 1998

• Handover Interface 1999

• Revised Handover Interface 2001

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Structure of Handover

• Administration

• Intercept related information

• Content of communication

• Specifies the boundary only

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IIF

content ofcommunication

access provider’s,network operator’s or

service provider’s domain

serviceinformation

HI1

HI3

HI2

HI

INI

mediationfunction(may betransparent)

IIF

AP/ NWO/ SvPadmin. centre

HI1: administration

HI2: intercept related information

HI3: content of communication

LEA(LEMF)

AP = Access providerHI = Handover interfaceIIF = internal intercepting functionINI = internal network interfaceLEMF = Law enforcement monitoring facilityMF = Mediation functionNWO = Network operatorSvP = Service provider

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Adoption of ES 201 671

• Manufacturers

• European Countries

• World-wide

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Mobile

• GSM Requirements– TS 101 507

• GSM Internals– TS 101 509 (03.33)

• Also TETRA– EN 301 040

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Data Achievements

• GPRS Handover Interface– TR 101 876– ES 201 671 v2 2001

• GPRS Internals– Annex B of TS 101 509

• Report “Issues on IP Interception”– TR 101 944

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IP Report

• Describes data

• Structures problems

• Common understanding

• Way point to solutions

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Data Handover

AccessTerminal

Service

Networkconnectivity

Physical

Data link

Network

Transport

Application

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2

3

4

5

transactions

(IP) datagrams

(IP) datagrams

Data link PDUs

Physical PDUs1

2

3

5

3

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Why standardise?

• Market availability

• Low cost

• Speed to market

• Low hassle

• Efficiency

• Simplicity

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Players in ETSI

• Operators

• Manufacturers– network– LEMF

• Regulators & Ministries

• Law Enforcement Agencies

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What is ETSI doing for data?

• UMTS

• TIPHON– multimedia– includes voice

• Other systems

• Market driven

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Where is the market going?

• Full steam ahead

• Where the demand is– more and more data

• Detail not clear

• Growth will continue

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The Future

• Support ETSI

• Adopt ETSI standards– simple– cheap, for everyone

• Ferocious pace of change– very hard to stop

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More info

• Web site– www.etsi.org

• Publications– http://webapp.etsi.org/pda/

• WG LI– http://www.etsi.org/SEC/sec_li.htm