In the demanding environment of modern infrastructure construction, reliable communication isn’t just a convenience—it’s a critical component of safety, coordination, and operational efficiency. For the monumental Changgan Tunnel Project, undertaken by the esteemed China Railway Fifth Bureau, we are proud to present a purpose-built communication solution designed to thrive where standard equipment fails.
This project demanded a telephone system that could endure the severe conditions of a major railway tunnel: pervasive dust, constant vibration, humidity fluctuations, and rugged daily use. In response, we have engineered a customized, heavy-duty IP telephone, built upon the robust platform of our JR101-FK-SIP model, with critical modifications to meet this unique challenge head-on.
Key Customization for the Changgan Tunnel:
l Enhanced, Sealed Enclosure: While the base model features a rugged die-cast aluminum alloy housing, for this project, we have implemented a custom casing with upgraded sealing gaskets and a refined ingress protection design. This ensures superior resistance to the fine, abrasive dust generated during tunnel boring and construction, maintaining the stringent IP66 rating even in the most particulate-heavy air.
l Uncompromised Core Durability: The telephone retains all the legendary toughness of its original design—resistant to extreme temperatures (-40℃ to 65℃), humidity, shock, vibration, and attempted vandalism. It is engineered to be virtually indestructible.
l Crystal-Clear Communication in Noise: Equipped with a noise-canceling microphone and support for high-definition voice codecs (G.711, G.722), it guarantees intelligible communication amidst the deafening background noise of heavy machinery, a critical feature for safety instructions and coordination.
Reliable Performance Powered for Any Scenario:
l Dual Power Options: Supports both Power-over-Ethernet (802.3af) and 12V DC input, offering flexible deployment anywhere in the tunnel network without reliance on local AC power.
l Industrial-Grade Connectivity: Features multiple M20 cable glands for secure wiring and offers both WAN and LAN ports for seamless integration into the project's SIP-based IP-PBX network.
l Essential Safety & Control Features: Includes a magnetic reed hook switch for longevity, a hearing-aid compatible handset, and supports two relays to remotely control external devices—such as alarms or lights—directly from the phone, integrating communication with safety systems.
Why This Solution is Ideal for the Changgan Tunnel:
Tunnel construction sites are among the most challenging industrial environments. This customized telephone is not merely an off-the-shelf product but a tailored safety and communication tool. It ensures that site managers, engineers, and workers maintain a reliable audio lifeline, facilitating immediate response, daily coordination, and, most importantly, enhancing on-site safety protocols.
We are honored to contribute to the safety and efficiency of the Changgan Tunnel Project with China Railway Fifth Bureau. This collaboration underscores our commitment to developing robust, intelligent, and application-specific communication solutions for critical infrastructure worldwide.
For more information on this customized solution or our full range of industrial communication products, please contact our team.
Building Connections. Ensuring Safety. Engineering Resilience.
