Overview of TETRA and its Services & Facilities

1. Overview of TETRA and its Services & Facilities Ole Arrhenius Nokia 17.06.2002

2. Agenda • TETRA and its objectives • Standards, system architecture • Interoperability • TDMA technology • Voice communication services • Data communication services • Future

3. Objectives behind TETRA standard • Define a digital Professional Mobile Radio (PMR) standard to satisfy the current and future needs of especially Public Safety and other PMR users across Europe • Unite fragmented PMR markets into one common market - harmonized use of spectrum • Fulfill European authority co-operation requirements (Schengen Treaty) to enable European Integration – cross-border operation using common frequency spectrum

4. Goals during TETRA standard creation Users: • desired features • choice • competition • Radio regulators: • spectral efficiency • harmonisation • Operators: • desired features • data services • competition • cost effectiveness • Manufacturers: • open market volumes • to ensure open standards, the ETSI IPR policy stipulates patented solutions to be made availableat fair and reasonable terms

5. TETRA is no longer limited to only Europe • TETRA has been adapted by many countries outside Europe, especially in Asia • Latin America and Africa also emerging • In early 2001 TETRA was awarded industry standard status in China • Several TETRA contracts in China already now

6. Network A Network B PEI AI ISI Core TETRA standards and standard interfaces • Inter-System Interface (ISI) • Peripheral Equipment Interface (PEI) • Air Interface (AI) • Voice plus data (V+D) • Direct Mode Operation (DMO) • Conformance testing • TETRA Speech Codec • Packet Data Optimized (PDO) DMO

7. Co-operation group 1 • Operational Management • Organisations’ own dispatchers manage their own virtual private networks • Co-operation when needed Police group 1 Ambulance group 1 DWS Authorised dispatcher can modify groups over the air ------------------------------------------- • Technical Management • Network Management Physical Radio Network

8. MARKET Road to interoperability Interoperability between products and features User and regulatory requirements User requirements User requirements Products and features Standard ETSI standardisation process Manufacturers implementations Interoper- ability tests Interoperability profiles under TETRA MoU Technology development

9. Interoperability in practice TETRA Interoperability ensures a multi vendor market with healthy price competition Sepura Ltd Today we have wide participation in the interoperability work Sepura Ltd

10. Four user channels multiplexed into one 25 kHz carrier TETRA TDMA principle 36 kbits/s gross bit rate 2 1 • TDMA (Time Division Multiple Access) • 4 channels per 25 kHz carrier • 4 calls per 25 kHz carrier (data or voice) • Voice and Data can be transmitted simultaneously 4 channels 3 4 Carrier SPECTRUM EFFICIENCY

11. What makes TETRA unique • Instant group communication • Fast call set-up time • Direct Mode (DMO) • Queuing • Pre-emptive priorities • Versatile dispatching and fleet management possibilities • Uncompromising security • authentication of radios (and networks) • air interface encryption, • end-to-end encryption support • disabling of stolen radios • Access to data from the field with TETRA data services • TETRA radio interfaceis designed and optimized for circuit voice and packet data

12. TETRA service classification • TETRA is not only a radio access standard, it is also a standard defining the services and functionality • Nearly 30 supplementary services: • priorities, late entry, DGNA, … • - fleet services • - telephony supplementary services Bearer services = data transport: - packet, circuit, single/multi-slot Teleservices = voice calls: - one-to-one, group, broadcast

13. Voice communication services • Excellent voice quality • Fast call set-up • Individual (one-to-one) calls • Express calls (push and talk) • Group communication • group calls • scanning of groups • dynamic regrouping • group area • broadcast groups • Emergency calls • Direct mode

14. Dispatcher functions • Group monitoring & communication • Joining groups • Preemptive speech item • Group member list • Dynamic regrouping • Broadcast group.

15. Database e-mail Data communication services • Status service - efficient, real time • Short Data Service, SDS - text messaging + applications • IP packet data - opens the world of network connectivity • Circuit mode data - for specialized applications like video surveillance

16. End-to-end applications for end-user needs • Database access, work orders, fleet management, reporting • Intra/Internet access, work orders, fleet management, reporting

17. Seamless Communications through TETRA IT servers • TETRA functionality provides officer safety and ultimate reliable and secure access GPRS/UMTS 3G access WAP servers End users TETRA IP packet core and backbone TETRA access Dispatchers User organizations

18. TETRA base station TETRA exchange Dispatching solution Network management services planning and deploying Integrated commad and control Intranet Internet LAN WAN PSTN PABXISDN TETRA terminals TETRA applications Connectivity products

19. Future with TETRA • ETSI board decided to initiate standardisation of TETRA Release 2 • fast packet data --> next generation for professional users • improved 3G cellular interworking • radio network performance improvement study project • rural long range cells • ETSI work continues under updated Terms of Reference • Future-safe technology --> TETRA will take advantage of all available and coming mainstream technologies as GSM, WLAN, GPRS and 3G

20. Conclusions • TETRA is the global open standard for digital professional radio communications • mission critical voice and group dispatch • mobile telephony • advanced data transfer and applications • Real and open multi-vendor supply • TETRA brings Internet/Intranet access to mobile workforce • TETRA is secure TETRA is ready, TETRA is future-proof, TETRA is global