Call Boxes on Highway

Call Boxes on Highways: An Intelligent, Digital IP Intercom and Broadcast Solution.

Client / Context

A modern highway construction project adhering to informatization, intelligence, and digitalization standards, aiming to deploy a robust communication system for motorist safety and central management.

Challenges

• No interference or attenuation in communication across long spans.

• Use existing unified road section internal network—minimizing fiber use and cost.

• Cover remote toll booths without direct Ethernet access.

• Require one-click emergency help, seamless intercom, broadcast, and alarm capabilities in a simplified architecture.

Call boxes on highway - Solution Overview

System Architecture & Technology

• Adoption of a new IP intercom broadcasting system using Ethernet digital transmission, ensuring interference-free, attenuation-free communication that uses existing internal networks responsibly.

• For toll booths lacking Ethernet, the network extends via local station connection.

Key Functional Modules

• Help terminals placed on highways enable one-click assistance for drivers.

• Toll booths interconnected: staff-to-staff and prioritized management-center calls, with capability for forced interrupts when needed.

• Real-time IP broadcasting linked to monitoring: automatic announcements (e.g., accidents or illegal parking) are triggered from control to incident location.

• Unified digital communication: a single network supports emergency help, background music, surveillance, and public broadcast—simply by connecting to the highway Ethernet backbone.

Hardware Stack

• JR‑TP‑04 Highway Telephone Pillar with Solar Panel: a durable, solar-powered roadside terminal providing universal help access.

• LCIS‑1000S Intercom Server: central IP intercom server supporting up to 1000 endpoints.

• LCDS‑01‑S IP Dispatching Console/Master Station: control-room console enabling call control, broadcast initiation, and system supervision.

Results & Benefits

Feature	Benefits
Ethernet digital IP network	No interference, no signal attenuation
Existing network reuse	Cost-effective and reduces fiber demand
One-click emergency help	Fast assistance and enhanced safety
Prioritized intercom routing	Control center always takes precedence
Incident-linked audio assist	Dynamic communication—real-time warnings
Multi-service over single network	Savings on cabling, simplified maintenance
Solar roadside terminals	Off-grid reliability and low infrastructure impact

This architecture enables efficient deployment of call boxes on highway, aligning with modern standards for smart infrastructure.

Conclusion

This “call boxes on highway” case study demonstrates how an IP-based communication system:

• Meets digital, intelligent highway construction standards.

• Delivers reliable, resilient intercom, emergency, and broadcast capabilities.

• Scales effortlessly using existing networks and solar-powered endpoints.

Want to design a similar resilient communication system for your roadway projects? Contact us—with your road layout, and we'll provide a free pre-design including power sizing, topology, and device recommendations.