DECT NR+ is emerging as a new kind of 5G class wireless standard that brings high reliability and low latency into professional AV—but without relying on traditional cellular infrastructure. For those specifying wireless audio, intercom, and unified communication (UC) systems, it offers a complementary architecture to operator-driven or private cellular 5G and marks the start of an ongoing journey toward non-cellular 5G tailored to professional environments.
Crucially, DECT NR+ does not happen in a vacuum. For more than two decades, classic DECT and DECT Evolution have been quietly doing a huge amount of work in AV and UC: from cordless telephony and conference phones to business headsets and wireless presentation systems. In the professional audio world, wireless microphone systems like Sennheiser SpeechLine Digital Wireless and AVX have shown how DECT-based links can deliver robust, easy-to-deploy speech solutions in corporate, education, and video production workflows. That installed base has shaped expectations around reliability, range, and ease of use—and it provides the real-world experience on which DECT NR+ now builds.
From Classic DECT to DECT NR+
At its core, DECT NR+ is the revolutionary evolution of classic DECT, a new wireless technology standardized by the European Telecommunications Standards Institute (ETSI) as DECT2020 NR and formally recognized by the International Telecommunication Union (ITU) as part of the IMT2020 5G family. Often described as the world’s first noncellular 5G technology, it takes core 5G concepts—ultrareliable low-latency communication, flexible OFDM waveform design, and support for massive device densities—and adapts them to private, user-owned networks. DECT NR+ is designed to operate in frequency bands below 6 GHz, so its propagation characteristics are close to other 5G NR deployments while staying in the lower sweet spot for indoor coverage and penetration. Today, its operation is anchored in an often dedicated, protected 1.9 GHz DECT band that is, in many countries, allocated specifically to DECT and its successors. That gives AV designers a predictable, interference-managed canvas for high-performance wireless audio. While current products focus on this almost globally available 1.9 GHz allocation, the same physical layer is already being evaluated for future site-licensed operation in emerging private network blocks such as CBRS type 3.5 GHz ranges, and the 3.7–3.8 GHz and 3.8–4.2 GHz bands. This extends the concept of user-owned noncellular 5G into higher midbands. Alongside WMAS in the UHF band, DECT NR+ gives us a non-cellular 5G option in 1.9 GHz and, in the future, additional bands—extending the same design philosophy of controlled, low-latency wireless into new parts of the spectrum.
MERCI and Collaborative Innovation
Research initiatives such as the Franco-German MERCI project have helped translate the theoretical capabilities of DECT NR+—like URLLC (Ultra-Reliable Low-Latency Communication) class performance and high device density—into concrete architectures and prototypes for demanding live and broadcast environments. MERCI’s final demonstrations, from industrial guided vehicles to the world’s first MPEG-H object-based live audio transmission over DECT NR+, show that the technology is ready for industrial and demanding audio applications and workflows.
The ecosystem around NR+ is being built as an open, collaborative effort rather than as a closed proprietary stack. The OpenerInitiative.org community has become a focal point for open implementations, tools, and documentation around DECT2020 NR / NR+, lowering the barrier for new entrants and experimental projects. In parallel, the DECT Forum’s Academic Industry Roundtable (AIR) offers a platform where manufacturers, chip vendors, universities, and research institutes can align roadmaps, run joint trials, and feed requirements back into standards. Taken together with the long history of classic DECT and DECT Evolution in telephony, conferencing, and wireless microphone systems like SpeechLine and AVX, these initiatives ensure that NR+ continues that lineage into a 5G-class, non-cellular future for AV and UC.
RF Behavior and Network Architecture
From an RF perspective, the 1.9 GHz anchor band avoids the heavy congestion of 2.4 GHz and 5 GHz WiFi while sidestepping the fragmented ISM bands below 1 GHz. For AV engineers, that means starting from a cleaner spectrum environment where interference from consumer devices is reduced, and coexistence planning is more predictable. The DECT NR+ physical layer uses modern OFDM with adaptive modulation, turbo coding, and optional hybrid ARQ to maintain robust links even in challenging venues like arenas, theaters, and large broadcast compounds—all within that sub 6 GHz window.
Equally important is network topology. DECT NR+ supports point-to-point, star, and self-healing mesh configurations in license-exempt spectrum, with scheduling and routing decisions taken locally at the edge. Unlike cellular 5G, it is not tied to a centralized operator-managed core, so timing and resource allocation can be optimized directly for the venue’s requirements. This makes DECT NR+ behave more like a hardened industrial network than a consumer mobile system, suited to scenarios where latency and reliability must be guaranteed block to block rather than averaged across a wide area.
Cellular 5G, by comparison, is built around operator-run base stations, licensed spectrum, and a centralized core. That architecture excels at wide area mobility, outdoor coverage, and high throughput broadband, and it is increasingly relevant as a backhaul and contribution link technology in broadcast and live production. For many AV and UC projects, however, there is also a need for a fully self-contained, venue-owned RF fabric for the “last mile” between devices and users. DECT NR+ fills that space by providing a modern PHY and MAC that can be rolled out and controlled entirely on-premises, complementing rather than replacing cellular 5G.
What this Means for AV and UC Specifiers
The traffic profile reflects this division of roles. DECT NR+ is optimized for low to medium data rate, small packet traffic such as audio streams, control signals, and sensor telemetry across a single site. That aligns well with professional audio, intercom, and venue-wide UC ecosystems, where deterministic timing and high reliability matter more than peak throughput. Cellular 5G, on the other hand, is optimized first for broadband data, with URLLC and massive IoT capabilities available where needed. In many real-world designs, the result is a layered approach: 5G for wide area connectivity and heavy backhaul, NR+ for dense, low-latency device-level connectivity inside the venue.
[Coming Soon to Pro AV: DECT NR+]
To make NR+ practically usable across vendors and product categories, ETSI TC DECT is developing a family of application-specific profiles for DECT2020 NR, including a Generic Audio Applications profile. Building on earlier DECT audio profiles such as the Advanced Audio Profile, this work defines common behaviors and capabilities for a broad class of audio devices and use cases on top of the NR+ radio layer. The aim is that NR+ based microphones, headsets, loudspeakers, and other endpoints can follow shared expectations for latency, codec handling, and control signaling, giving specifiers more confidence that NR+ labelled solutions will meet a consistent baseline.
For AV and UC specifiers, the technology choice is already becoming a practical line item. A wireless microphone or intercom system that runs on DECT NR+ is not just “another DECT solution”; it is built on an ETSI standardized PHY/MAC engine operating in an often dedicated, protected 1.9 GHz band, with deterministic latency and high device density designed in from the start. That changes RF planning, interference management, and scalability. Instead of manually coordinating dozens of channels under tight constraints, professionals can specify a fabric that can automatically adapt while maintaining predictable performance. In UC, the same fabric can underpin headsets, speakerphones, and room control systems on a dedicated RF layer that does not compete with IT-managed WiFi.
Looking ahead, the ability of DECT NR+ to move beyond 1.9 GHz into site-licensed midbands such as CBRS-type 3.5 GHz allocations and the 3.7–3.8 GHz and 3.8–4.2 GHz ranges now opening for local networks adds another dimension for system designers. The same noncellular 5G technology that underpins license-exempt AV and UC deployments will, in the future, also be able to inhabit coordinated, locally licensed spectrum where extra isolation or capacity is needed—for example, in large campuses, broadcast hubs or critical infrastructure facilities.
In that sense, DECT NR+ is not simply “DECT with a new name,” but a new class of radio access technology that brings 5G-style performance into a spectrum and architecture tuned for professional AV and UC. As this journey continues—driven by collaboration between manufacturers, open technical communities, academic partners, and standardization bodies—DECT NR+ is set to become another proven building block on the AV designer’s shelf: a noncellular 5G foundation that aims to make “wireless as good as wired” a practical design choice in everyday audio and UC projects.
