DMR Association completes three interoperability test sessions

The DMR Association has announced the completion of three successful DMR interoperability test sessions.

Two sessions were for DMR Tier II (conventional operation) and the third session for Tier III (trunked operation). The Tier II tests took place between Motorola Solutions and Hytera Communications, and Selex Elsag and EMC SpA. The Tier III session took place between Hytera Communications (infrastructure) and Tait Communications (terminals).

The completion of these tests brings the total number of DMR bilateral test sessions completed to 10 and the number of radio manufacturers that have participated in test sessions to seven.

Tom Mockridge, chair of the DMR Association Technical Working Group, said the “announcement of the interoperability tests for both Tier II and Tier III products demonstrates the commitment of the radio industry to DMR as the digital technology of choice for professional users, and the leading role DMR products play in the marketplace.

“The success of DMR is based on the technology’s strengths of ease of migration from analog, more effective use of spectrum, efficient use of infrastructure compared to FDMA, and the flexible and innovative features available from a 2-slot TDMA approach.”

DMR Tier II mandatory features tested were: Group Call, Individual Call (PATCS), Individual Call (OACSU), All Call and Emergency Call.

DMR Tier II optional features tested were: Call Alert, Radio Check, Remote Monitor, Emergency Alarm and Radio Enable/Disable.

DMR Tier III mandatory features tested were: Registration, Single Site Talk Group Voice Call Service, Individual Voice Call Service using OACSU on single frequency pair, Individual Voice Call Service on single site using OACSU and FOACSU, Control Channel Hunting, Single Site Short Data Message (text).

DMR Tier III optional features tested in the session were: Multisite Talk Group Voice Call Service, Individual Multisite Voice Call Service using OACSU and FOACSU, and Multisite Short Data Message (text).

Details of specific products and features tested in the sessions are available on the DMR website.