J&R Fiber Optic Telephone System for an Underground Utility Tunnel in Guangzhou, China
In August 2023, J&R Technology deployed a fiber optic telephone communication solution for the Qingsheng Road underground utility tunnel in Guangzhou, China. The system combines the JR101-FK-CR-A fiber optic telephone master unit with JREX106-FK explosion-proof telephones to support reliable voice communication for tunnel inspections, maintenance operations, and emergency communications.
Designed for demanding underground environments, the solution provides a dedicated communication infrastructure for municipal utility tunnel operations.
Reliable Communication for Underground Utility Tunnels
Underground utility tunnels accommodate essential urban infrastructure, including power, telecommunications, water supply, and gas pipelines. Their enclosed environments can limit public mobile network coverage, making dependable communication between field personnel, maintenance teams, and control room staff essential. Reliable voice communication helps teams coordinate inspections, exchange operational information, and respond to unexpected events. Different tunnel sections may also require equipment suited to specific environmental and safety conditions. A dedicated communication system is therefore essential for supporting routine maintenance and operational coordination throughout underground utility tunnels.
Fiber Optic Communication with Explosion-Proof Telephones
To address the communication requirements of the Qingsheng Road project, J&R Technology combined fiber optic telephone equipment with explosion-proof terminals to support communication across the tunnel and in designated hazardous areas.
JR101-FK-CR-A Fiber Optic Telephone Master Unit
The fiber optic telephone master unit provides the core connection for the communication system. With fiber optic connectivity and fiber ring networking support, it provides a reliable foundation for voice communication across multiple tunnel sections. Key features include: · IP65 ingress protection · IK10 impact resistance · Operating temperature range of -40°C to +65°C · These features support reliable operation in demanding industrial environments and provide flexibility for underground utility tunnel communication networks.
JREX106-FK Explosion-Proof Telephone
For designated hazardous areas, such as gas utility sections, the solution incorporates the JREX106-FK explosion-proof telephone. With Ex explosion protection, an IP66 rating, and an operating temperature range of -40°C to +55°C, the telephone is designed for communication in environments where appropriate explosion-protected equipment is required. By combining fiber optic connectivity with explosion-proof telephone terminals, the solution addresses both network connectivity and the specific safety requirements of designated installation areas.
Supporting Tunnel Maintenance and Emergency Communication
Reliable Dedicated Communication Fiber optic connectivity provides a dedicated communication link for enclosed underground environments where public mobile network coverage may be limited. It supports voice communication for routine inspections and maintenance activities. Equipment for Demanding Environments The fiber optic telephone master unit and explosion-proof telephone serve different installation requirements. Their respective protection, impact resistance, temperature tolerance, and explosion-protection features help address the challenges of underground industrial environments. Improved Operational Coordination Reliable voice communication helps inspection personnel, maintenance teams, and control room staff exchange information and coordinate field activities. It also supports communication during fault investigation and emergency response. A Foundation for Utility Tunnel Communication Networks Combining fiber optic telephone equipment with industrial communication terminals provides a practical foundation for underground utility tunnel communication systems, with scope for future network expansion and operational improvements.
Reliable Communication for Urban Infrastructure
The Qingsheng Road underground utility tunnel project demonstrates the application of J&R Technology's industrial communication products in urban infrastructure. By addressing the communication demands of enclosed spaces and challenging operating conditions, J&R Technology continues to provide reliable industrial telephone equipment and communication solutions for municipal infrastructure, helping support day-to-day operations and essential communication needs.
Prisons & Correctional Facilities
Transportation & Underground Infrastructure
Critical Industrial & Energy Facilities
Marine & Offshore
Manufacturing Plant & Public Facilities
