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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
1
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
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