TETRA

Introduction

TErrestrial Trunked RAdio (TETRA) is a digital trunked mobile radio standard developed to meet the needs of traditional Professional Mobile Radio (PMR) user organisations such as:

  • Public Safety 
  • Transportation 
  • Utilities 
  • Government 
  • Military 
  • PAMR 
  • Commercial & Industry 
  • Oil & Gas

The TETRA standard has been specifically developed to meet the needs of a variety of traditional PMR user organisations. This means it has a scaleable architecture allowing economic network deployments ranging from single site local area coverage to multiple site wide area national coverage.

Some unique PMR services of TETRA are:

  • Wide area fast call set-up "all informed net" group calls 
  • Direct Mode Operation (DMO) allowing "back to back" communications between radio terminals independent of the network 
  • High level voice encryption to meet the security needs of public safety organisations 
  • An Emergency Call facility that gets through even if the system is busy 
  • Full duplex voice for PABX and PSTN telephony communications

Besides meeting the needs of traditional PMR user organisations, the TETRA standard has also been developed to meet the needs of Public Access Mobile Radio (PAMR) operators.

To meet the ever changing user requirements and utilise the latest in technology developments, TETRA continues to be evolved and enhanced with the development of new standards. An example of this is TETRA Release 2, which includes the TETRA Enhanced Data Service (TEDS) that provides wideband high speed data communication services.

Our Role & Activities

Terrestrial Trunked Radio (TETRA) is one of a number of digital wireless communication technologies standardized by ETSI.

ETSI technical committee TETRA and Critical Communications Evolution (TCCE) produces standards for a frequency spectrum efficient digital PMR and PAMR system to support voice and data services using techniques such as Trunking, Time Division Multiple Access (TDMA) methods and a variety of efficient modulation schemes for increased data throughput.

Active TCCE WGs:

  • WG1 TCCE User Requirements / Services
  • WG3 TCCE Air Interface and Network Protocols
  • WG4 TCCE High Speed Data
  • WG5 TCCE Voice coding
  • WG6 TCCE Security
  • WG8 TCCE Off-network services.

Within ETSI, the work of the TCCE committee depends on effective cooperation with other committees, such as ETSI EMC & Radio Spectrum Matters (ERM) committee, ETSI EMTEL and ETSI SAGE for security matters.

Outside ETSI, the TCCE committee liaises with the TETRA and Critical Communications Association (TCCA) on a number of topics e.g. promotional and technical discussions on how to best advance the TETRA Standard.

TETRA codes and security algorithms

Details of ETSI algorithms (TEA1, TEA3, TEA4, TAA1).

Details of the following TETRA codes:

  • SDS-TL protocol identifier
  • TETRA Proprietary AT command name family
  • Proprietary element owner information element value code
  • Location system coding scheme code
  • Type Approval Code
  • Final Assembly Code.

Standards

The following is a list of useful TETRA related standards and other ETSI documents. Please use the ETSI Work Programme to find further related standards.

Standard No. Standard title.
TR 102 300-2 Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Designers' guide; Part 2: Radio channels, network protocols and service performance
TS 100 392-2 Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 2: Air Interface (AI)
EN 300 394-1 Terrestrial Trunked Radio (TETRA); Conformance testing specification; Part 1: Radio
EN 300 396-6 Terrestrial Trunked Radio (TETRA); Direct Mode Operation (DMO); Part 6: Security
TS 100 392-5 Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D) and Direct Mode Operation (DMO); Part 5: Peripheral Equipment Interface (PEI)
TS 100 392-18-1 Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D) and Direct Mode Operation (DMO); Part 18: Air interface optimized applications; Sub-part 1: Location Information Protocol (LIP)
TR 102 022-1 User Requirement Specification; Mission Critical Broadband Communication Requirements
TR 102 021-12 Terrestrial Trunked Radio (TETRA); User Requirement Specification TETRA Release 2.1; Part 12: Direct Mode Operation (DMO)
EN 300 392-7 Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 7: Security
TS 100 392-18-4 Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D) and Direct Mode Operation (DMO); Part 18: Air interface optimized applications; Sub-part 4: Net Assist Protocol 2 (NAP2)
EN 300 392-12-23 Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 12: Supplementary services stage 3; Sub-part 23: Call Completion on No Reply (CCNR)
EN 300 392-12-20 Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 12: Supplementary services stage 3; Sub-part 20: Discreet Listening (DL)
EN 300 392-12-4 Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 12: Supplementary services stage 3; Sub-part 4: Call Forwarding (CF)
EN 300 392-12-21 Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 12: Supplementary services stage 3; Sub-part 21: Ambience Listening (AL)
EN 300 392-9 Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 9: General requirements for supplementary services
EN 300 392-12-13 Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 12: Supplementary services stage 3; Sub-part 13: Call Completion to Busy Subscriber (CCBS)
EN 300 392-12-14 Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 12: Supplementary services stage 3; Sub-part 14: Late Entry (LE)
EN 300 396-1 Terrestrial Trunked Radio (TETRA); Technical requirements for Direct Mode Operation (DMO); Part 1: General network design
EN 300 396-2 Terrestrial Trunked Radio (TETRA); Technical requirements for Direct Mode Operation (DMO); Part 2: Radio aspects
EN 300 396-3 Terrestrial Trunked Radio (TETRA); Technical requirements for Direct Mode Operation (DMO); Part 3: Mobile Station to Mobile Station (MS-MS) Air Interface (AI) protocol