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Solution

Air Traffic Control and Airports

Maritime Communication Scheme

Power and Energy Communication Solutions

Communication Plan for Military and Public Security Forces

Communication Scheme for Metro and Highway Systems

Other Industries: Communication Solutions

Multi-Point Voice Integrated Access Solution for Government and Enterprises

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Communication Networking Scheme for the Airfield of a Certain Airport in Xinjiang Based on Ethernet Ring Switches

At a certain airport in Xinjiang, a flight‑area communication ring network has been deployed, leveraging ring‑topology switches and YinXun PCM equipment (ZMUX‑4102/4104). The fiber‑optic ring carries voice, navigation, meteorological, and surveillance data from both remote stations and the central office, enabling unified multi‑service access and ring‑network redundancy protection to ensure highly reliable communications.

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Maritime VHF VoIP Communication System Solution

Guangzhou YinXun has launched a maritime VHF VoIP communication system that uses the core device ZMUX‑4102 to enable bidirectional conversion between analog audio and IP data packets, seamlessly upgrading conventional analog VHF radios into IP‑based communication nodes. The system supports flexible multi‑channel expansion and offers features such as remote device control, voice recording and playback, and multi‑site networking. Leveraging the wide‑area coverage of IP networks, this solution effectively reduces construction and operational costs while enabling unattended operation at remote shore stations.

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MB-1 Marker Beacon and NDB-200 Non-Directional Beacon Communication Transmission System Solution

This solution is built on the ZMUX‑4102 platform and establishes a fiber/E1/IP multi‑link transmission system for the MB‑1 VOR and the NDB‑200 non‑directional beacon. It supports dual‑controller and dual‑power redundancy, automatic multi‑link switching, and enables long‑distance transmission of beacon signals along with integrated access to multiple services, thereby ensuring highly reliable and stable operation of civil aviation navigation services.

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A Voice Communication System Solution for a Steel Mill

This solution employs Guangzhou YinXun’s proprietary ZMUX‑3300P voice‑over‑optical transmission equipment to establish a dual‑fiber self‑healing ring network for voice communications at the steel plant, covering 17 remote sites and ensuring compatibility with existing infrastructure. The equipment boasts high capacity, robust anti‑interference performance, dual power supplies, and redundant links, while supporting flexible scalability and centralized operations and maintenance. This approach reduces cabling, O&M, and expansion costs, and the product has been rigorously field‑tested across multiple industries, delivering consistent quality. With direct supply from the manufacturer, it guarantees reliable delivery and end‑to‑end service, ensuring uninterrupted production‑level communications around the clock and helping to cut costs while boosting efficiency.

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Airport Runway Fiber Optic Self-Healing Ring Network Transmission System Solution

The solution establishes a dedicated fiber-optic ring network between the airport runway area and the air traffic control building. It employs a dual-ring, dual‑homing architecture, with each runway forming its own independent ring and the central site utilizing redundant dual‑device access. In the event of a failure, the network achieves millisecond‑level self‑healing switching in under 50 ms. The system provides unified transport for navigation, meteorological, dispatch‑voice, and surveillance services, enabling physical isolation and multi‑service sharing over a single network, thereby ensuring highly available transmission for core production‑critical applications.

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Networking Scheme for the Dispatch Voice, Clock, and Public Address Communication Transmission System of Guangzhou Metro Line 3

The solution designs a dispatch voice, clock, and broadcast transmission system for Guangzhou Metro Line 3, including its northern extension. The dispatch center is equipped with five core devices: four serve to carry dispatch voice and clock services across Line 3 and the northern extension, while one provides unified broadcast coverage for all 31 stations along the entire line. Remote stations connect via E1 links, ensuring physical separation of services and highly reliable transmission.

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The ZMUX series’ integrated transmission solution lays a solid foundation for multi-service communications.

This paper presents the ZMUX series of integrated transmission equipment, which establishes a five-node closed-loop self-healing ring network. Leveraging two-fiber bidirectional self-healing, 1+1 dual-power redundancy, and centralized monitoring technologies, it delivers end-to-end hybrid transmission of voice, data, video, and Ethernet services. The solution is widely deployed in dedicated networks across industries such as power, rail transit, water conservancy, and mining, supporting the localization and upgrade of legacy communication networks.

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Unattended VHF Remote Station “Two Sites, One Air Interface” Protection Communication Transmission System Solution

The solution addresses the high‑reliability requirements of critical air traffic control communication nodes—VHF stations and radar sites—by adopting a three‑dimensional “two locations, one airspace” protection architecture: two terrestrial E1 links supplemented by a wireless microwave backup. Through a “dual‑node, triple‑path, single‑interlock” design, it achieves dual redundancy at both the equipment and link levels. At both the local and remote ends, two sets of PCM equipment (A/B units) are deployed, working in concert with protection‑switching devices to enable centralized monitoring and automatic switchover. When the primary E1 link fails, traffic is automatically rerouted to the microwave backup; in extreme scenarios where both terrestrial E1 links fail simultaneously, airborne support remains available. Should a single PCM unit malfunction, affected services are seamlessly switched over to a functioning device via cross‑connection. The system supports unattended operation and centralized monitoring, eliminating the need for on‑site manual intervention.

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Enterprise/Park Three-Tier Voice Network Communication and Transmission System Solution

Guangzhou YinXun has launched a three-tier voice network communication and transmission solution for enterprises and industrial parks, adopting a three-tier star/tree architecture characterized by “centralized management, hierarchical aggregation, and multi-point access.” At the core central office layer, ZMUX‑3300P centralized equipment is deployed, supporting 360 telephone channels; at the remote aggregation layer, ZMUX‑3300P is likewise installed, with each remote site accommodating 60 telephone channels; and at the edge access layer, ZMUX‑08SG devices are used to extend connectivity via self‑built fiber optic links to end‑users, supporting 10 telephone channels. The solution is compatible with multiple transmission links, including fiber, E1, and IP, and supports centralized network management, monitoring, and remote fault alarms.

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