J&R Fiber Optic Waterproof Telephone System Enhances Communication Reliability in China Optics Valley Smart Connected Corridor Project
As urban infrastructure continues to advance toward digitalization and intelligent management, underground utility tunnels play an increasingly important role in modern city infrastructure. These environments require reliable communication systems with stable performance, extensive coverage, and strong environmental adaptability.
With long, enclosed passageways and widely distributed equipment, underground utility tunnels present unique communication challenges. Reliable voice communication is essential for daily inspections, equipment maintenance, and emergency response, enabling field personnel to stay connected with the control center and ensuring timely information exchange. In January 2022, J&R's fiber optic voice communication system was deployed in the High-tech 2nd Road section of the China Optics Valley Smart Connected Corridor Project. The solution provides reliable and convenient voice communication throughout the underground utility tunnel, supporting routine operations, maintenance, and emergency communications.
Communication Solution Deployment
Based on the tunnel layout and operational communication requirements, J&R delivered a fiber optic communication solution using an optical fiber network as the transmission backbone, establishing reliable voice communication links between field locations and the control center. The system consists of a fiber optic waterproof telephone master unit and multiple waterproof telephone extension units. The master unit supports multiple extension connections, enabling communication coverage across different tunnel sections and supporting multi-point communication. Working in conjunction with the control center's dispatching equipment, the system enables centralized communication management and efficient coordination between field personnel and control room operators.
Key Products
1. Fiber Optic Waterproof Telephone Master Unit | JR101-FK-CR-M04/08/16
· Fiber optic connectivity with support for multiple telephone extensions · HD voice and noise reduction for clear communication · Cold-rolled steel enclosure offering protection against water, dust, and impact · Industrial-grade construction for demanding operating environments 2. Waterproof Telephone Extension Unit | JR101-FK-CR-A
· Standard analog telephone for convenient on-site voice communication · HD voice and noise reduction for improved call clarity · Cold-rolled steel enclosure with UV-resistant powder coating · Robust construction for underground utility tunnels and other demanding environments
Application Benefits
The fiber optic communication system provides multi-point voice connectivity throughout the underground utility tunnel, improving communication coverage and establishing convenient communication channels between inspection teams, maintenance personnel, and the control center. By combining fiber optic transmission with multi-terminal connectivity, the solution supports coordinated communication across multiple tunnel sections. HD noise reduction technology enhances voice clarity, while industrial-grade protection improves equipment durability and environmental adaptability. These capabilities provide dependable communication support for routine inspections, equipment maintenance, and emergency response, contributing to more efficient tunnel operations and safer working conditions. As part of its portfolio of industrial communication and safety and security equipment, J&R delivers reliable communication products and integrated solutions for demanding infrastructure environments. The China Optics Valley Smart Connected Corridor Project demonstrates how fiber optic telephone systems can support dependable communication in underground utility tunnels, providing a practical reference for the development of smart urban infrastructure.
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