Our commitment
to our members

The DMR Association is dedicated to continually support and improve the international digital radio standard to elevate the customer experience.
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clear, and reliable

The DMR air interface provides coverage similar to analogue, offering the benefits of digital without the need to increase the number of repeater sites.
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Extensive DMR technology capabilities

The DMR Association’s application interface showcases the powerful features available to digital mobile radio system users.
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DMR is trusted by over 15 million users worldwide

Our resolute team are proud to provide unrivalled support to its global members and the assurance that digital mobile radio is the most widely used digital radio standard for the business world.

The DMR Association’s mission, since 2005, has been to support the European Telecommunications Standards Institute during the DMR standardisation process. To provide the ultimate service to our members we focus on the commercial applications of DMR comprised in Tier II and Tier III.

We welcome new members from across the globe. Whether you are a business that utilises DMR, or an individual that supports the professional use of the DMR standard, you’ll be in great company. We truly appreciate your help in enabling us to drive forward our mission.

Improving standards:
Elevating experiences

We combine our knowledge and expertise with education, awareness, certification, and interoperability training to guarantee that today’s digital radio technology customers experience the highest level of service. We invest our time and energy to futureproof your investments.

As a member of the DMR Association you’ll benefit from the frequent and direct communications that we hold with global regulators, trade bodies and standards organisations. We are committed to ensure that all DMR products reach the market within a successful, open, multi-vendor chain and that our members gain from continuous, competitive development.

DMR Association Mission

DMR applications interface standards unify interoperable voice and data solutions across multiple technologies and manufacturers.

Application Interface (AIS)


Please join us in welcoming
ITI Limited as a category 1 member.

ITI Limited, established in 1948, is a Government of India public sector undertaking for the telecommunications technology segment. The company has manufacturing facilities in Bengaluru, Naini, Raebareli, Mankapur and Palakkad along with an R&D centre in Bengaluru. Visit DMRA Members page >

Welcome ITI Limited to the DMR Association
Welcome Centre for Development of Advanced Computing (CDAC)
Welcome Centre for Development of Advanced Computing (CDAC)

Centre for Development of Advanced Computing (CDAC) are a premier R&D organisation of the Ministry of Electronics and Information Technology as part of the Government of India.
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Welcome IMPTT Inc.

IMPTT is a global development company of POC solutions. ProPTT2 provides PTT service in various environments and supports interworking with existing radios through ProGate(RoIP GW).
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Welcome EF Johnson Technologies, Inc. to the DMR Association
EF Johnson Technologies, Inc.

EF Johnson Technologies, Inc. is an independent subsidiary of JVCKENWOOD Corporation, focuses on innovating, and developing the highest quality secure communications solutions to organizations whose mission is to protect lives. Visit Members page >

The power of DMR technology continues to expand possibilities and is enjoyed by over 15 million users worldwide.

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Key features of the DMR standard

  • Interoperability between manufacturers
  • Backwards spectrum compatibility
  • State of the art Forward Error Correction
  • IP Data
  • Fast Automatic Vehicle Localisation (AVL)
  • Optional encryption for secure communications
  • Doubling of capacity in existing channels
  • Data applications interface (AIS)
  • Two-slot Time Division (TDMA) operation

DMR enables a single 12.5 kHz channel to support two simultaneous and independent calls. This is achieved using TDMA, Time Division Multiple Access. Under TDMA DMR retains the 12.5 kHz channel width and divides it into two alternating timeslots A and B where each timeslot acts as a separate communication path.

Each communication path is active for half of the time in 12.5 kHz of bandwidth, each uses an equivalent bandwidth of half x 12.5 kHz or 6.25 kHz. This is known as having an efficiency of one talk path per 6.25kHz of spectrum. However with DMR the channel as a whole maintains the same profile as an analogue 12.5kHz signal.

This means that DMR radios operate in the licence holders existing 12.5 kHz or 25 kHz channels; there is therefore no need for re-banding or re-licensing but at the channel capacity is doubled. Read More >

DMR Double Capacity

Optimising standards, extending capabilities, and reducing costs through the creation of multiple and mutually compatible products.

The DMR Standards