Product Classes clarify the compatibility and capabilities of different dPMR compliant equipment to assist users in identifying which Classes of equipment will inter-work with each other.
Product Clasifications
dPMR™ Product Class Interoperability
To assist users in the selection of appropriate dPMR products and solutions for specific applications, the dPMR Association have introduced Product Classes to
distinguish between the compatibility and capabilities of different dPMR compliant equipment. This interoperability classification is principally required for TS 102 490
compliant equipment (e.g. for dPMR446), where different compliant Vocoders are permitted but will not inter-work with each other.
For equipment operating to ERM dPMR standards as specified in ETSI TS 102 658 in FDMA protocol with a channel spacing of 6.25 kHz
(6.25 kHz FDMA standard set), the dPMR Association have standardised the AMBE+2 Vocoder, so users can be sure that any equipment which
has passed interoperability (IOP) testing and granted an IOP Certificate or Test Report has the right to display the dPMR logo and will be interoperable with other equipment of the same Class.
In the cases of Class A (AMBE +2 Vocoder) and Class R (RAWCWI Vocoder), equipment of the same Class will offer full interoperability
irrespective of manufacturer, while combining the use of equipment from different classes could result in limited functions being available.
Class M equipment employ a manufacturer specific Vocoder and therefore Class M marking of a product serves as a warning to users
that it may not work with any other class and, in addition, may not work with Class M equipment from another manufacturer. Product classification marking of TS102 490 unlicensed dPMR 446 compliant equipment:
| Classification | Vocoder Type | Interoperability | Product Marking |
|---|---|---|---|
| CLASS R | RALCWI™ Vocoder | Full interoperability with other Class R equipment. Limited interoperability with other dPMR Classes. |
 |
| CLASS A | AMBE+2™ Vocoder | Full interoperability with other Class A equipment. Limited interoperability with other dPMR Classes. |
 |
| CLASS M | Manufacturer Specific Vocoder |
May not work with other Class M equipment. May not work with other dPMR Classes. |
 |
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About the dPMR Association
We are the guardians of the ETSI dPMR™ standard—the benchmark for highly efficient 6.25kHz FDMA digital radio. The Association supports a global ecosystem of manufacturers and developers, ensuring multi-vendor interoperability and promoting the benefits of true narrowband digital communications.
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