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The ZMUX series’ integrated transmission solution lays a solid foundation for multi-service communications.
Release date:
2026-06-15
Recently, a five-node self-healing ring‑network transmission solution—built on ZMUX’s full range of integrated service transmission equipment—has been officially deployed at scale. Leveraging four core advantages—bidirectional fiber‑optic transmission, link‑level self‑healing protection, a dual‑power 1+1 redundancy architecture, and centralized network management across the entire network—this ring‑based topology provides a one‑stop solution to the challenges of mixed‑service transport—including voice, audio, serial‑port data, high‑definition video, and Ethernet broadband—in dedicated networks for sectors such as power, rail transit, mining, and water resources. As a result, it has emerged as the preferred upgrade path for traditional private‑network communications.
I. Network Architecture: A ring topology with multiple sites connected in series, featuring centralized aggregation and control at the network edge.
The entire system comprises a closed-loop fiber-optic ring network consisting of five remote sites and one central office site.
Each remote site is equipped with a “ZMUX‑3036 integrated‑service PCM device + ZMUX‑LME optical transceiver for ring‑network applications” configuration. The ZMUX‑3036 handles local access to on-site telephones, dispatch audio, telemetry and control data, security video, and other full‑range services, and interfaces via E1 links to the ZMUX‑LME optical transmission equipment, which in turn connects to the ring‑network link through fiber optics. The five remote nodes are interconnected in a closed fiber‑optic loop, with the two ring‑network links ultimately converging at the central office’s ZMUX‑LMXE optical‑ring aggregation device.
At the network edge, the core is equipped with the high‑capacity rack‑mount integrated access platform ZMUX‑3300, which aggregates five E1 services and Ethernet data from the entire ring, enabling voice, data, and video services to be deployed across all sites. Paired with switches and a centralized monitoring and management server, it establishes a full‑network remote operations and maintenance platform, allowing O&M personnel to monitor end‑to‑end operational status, fault alarms, and device parameters online without leaving their desks, thereby significantly reducing on‑site inspection costs.
II. Key Technological Highlights: Multi‑redundancy design ensures zero interruption in private network communications.
1. Two-fiber bidirectional self-healing ring, with millisecond-level fault switchover.
The entire光环 network employs a closed-loop, dual-fiber ring architecture. In the event of a fiber break at any point or a single-site equipment failure, the ring automatically switches its transmission path, achieving link self-healing within 50 milliseconds and ensuring uninterrupted service across the entire ring. This design is ideally suited to the demanding operating conditions of unattended field sites and remote stations.
2. Dual-power 1+1 redundancy protection
All models in the series come standard with dual‑channel DC power redundancy: when one power supply fails, the other seamlessly takes over, eliminating the risk of equipment downtime caused by power outages or line surges. This makes them well suited for environments with unstable power supplies, such as electrical substations and tunnel base stations.
3. Full-service compatibility, one-stop integrated access
The ZMUX-3036 can simultaneously integrate program-controlled telephony, dispatch audio, RS485/232 telemetry and control data, IP‑based surveillance video, and 100‑Mbps Ethernet. At a single site, there’s no need for multiple standalone devices; a single system handles both narrowband and broadband hybrid transmission, reducing the number of equipment in the equipment room and lowering installation and operation‑and‑maintenance costs.
4. Centralized Intelligent Monitoring Across the Entire Network
Leveraging the central office‑based centralized monitoring system, it enables online configuration of all remote devices in the ring network, fault alarms, link‑loss monitoring, and status queries for service ports, while precisely pinpointing fault locations, resulting in an over 70% improvement in operational efficiency.
III. Scenario Implementation: Industry-Specific Private Networks Embrace Lightweight Upgrade Solutions
The current ZMUX self-healing optical ring network solution has been widely deployed in areas such as power distribution substation clusters, electromechanical systems in highway tunnels, underground communication in mines, clusters of water‑conservation sluice stations, airport navigation beacons, and dedicated security networks for industrial parks. Compared with traditional point‑to‑point fiber‑optic networking, the ring topology reduces fiber‑cable installation costs by 30%, while its self‑healing capability significantly lowers post‑deployment fault‑repair expenses. In contrast to large SDH equipment, the ZMUX series of modular devices offers flexible deployment, lower capital costs, and plug‑and‑play operation, perfectly meeting the construction needs of small and medium‑sized private networks characterized by multiple nodes and distributed architectures.
IV. Industry Outlook: Domestic Integrated Optical Transmission Continues to Deeply Cultivate the Private Network Segment
As the development of China’s new infrastructure, smart water management, smart grids, and information‑based rail transit accelerates, multi‑service hybrid fiber‑optic ring networks have become the mainstream approach to private‑network communications. The domestically developed ZMUX series of integrated multiplexing and transmission equipment, backed by years of technological evolution, continues to enhance self‑healing ring performance and expand the range of service interfaces. Going forward, it will undergo iterative upgrades focused on intelligent network management and the convergence of narrowband and 5G transport, thereby continuously supporting the modernization and upgrading of legacy communication networks across various industries in China.
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