NetComm™ Wireless IP Network for Rail Facilities

NetComm™ Application Document – Tunnel Radio of America© 01-04-2013

NetComm™ Wireless IP Network for Railroad Facilities

The Tunnel Radio NetComm™ system is designed for use in shielded environments where radio signals are

otherwise blocked such as underground mining operations or Rail Tunnels. The system uses hardened

components integrated in such a manner to provide Broadband wireless and Point to Point communications.

To achieve this, RoIP equipment, Cell and WiFi devices are configured in such a manner as to allow operation

between wireless “nodes”. The nodes are interconnected via an IP based network. The network may be

connected by wireless, (point to point digital wireless), wired (such as CAT 5/6 network cable), and Fiber Optic

single mode cables. Tunnel Radio has developed a unique shielded inter-cable carrying both data and power to

simplify installation between nodes on a single cable.

Many facilities employ the use of fiber optic cable to extend Ethernet (IP data interconnection) into

underground zones. Single-mode Fiber optic cable is very popular and used due to several factors:

Low cost Common use and availability Wide variety of components available Ease of service and repair in case if damage High bandwidth Network visibility

Background of technology

NetComm™ Overview

NetComm™ Application Document – Tunnel Radio of America© 01-04-2013

Major Components

NetComm™ System Head

Unit NetComm™ Remote Node

Extending wireless into underground operations is costly and requires special techniques. Typically a

distributed antenna network is employed, which encompasses a network of special coax cable, antennas

and amplifiers. With the NetComm™ technology, existing Ethernet systems may be used in lieu of or as a

backup to a distributed network as described, maintaining simplicity and saving costs. In addition,

multiband RF communications maybe integrated in the NetComm™ IP environment providing true

broadband capability using Tunnel Radio select components.

The Radio portion of a NetComm™ system employs an interconnection method, (Fiber Optic Cable or CAT6

combination cable), IP based wireless components including WiFi, RoIP radios and Tunnel Radio integrated

units and required peripherals.

A network display and remote programming is

computer driven using enterprise based software.

Location of each RoIP transmission is logged and

retrievable via PC as pictured. An inter-site

controller is used if the site is off-campus, similar to

the railroad application.

Diagnostics & Monitoring

NetComm™ Application Document – Tunnel Radio of America© 01-04-2013

Expansion Options

In addition to the RoIP functions, complete Broadband use of the Ethernet network is the heart of the

NetComm™ concept. Use of an ever increasing variety of IP devices may then be deployed over this secure

easy to use concept.

RoIP primary wireless communication network – IP based/WAN capability WiFi port capability using a wide variety of wireless port devices 802.11 wireless switch standard power capability (short range) Reader Port for MineAx™ wireless tracking network over IP Cellular Port capability Video ports POE compatibility Broadband and simplex capability -160, 200, 450, WiFi, Cellular and more Simplex to Simplex RF communications in any band Unified cabling

NetComm™ Local Power - POE

POE Power Over Ethernet is accomplished by adding a power

module which uses the unused conductors within the

Ethernet cable to “Self Power” the remote accessory.

For more information on NetComm® and system specifications, please contact us at

TUNNEL RADIO OF AMERICA®

6435 Hyslop Road Corvallis, Oregon 97330

Phone 541-758-5637 Fax 541-758-1417

trsales@tunnelradio.com www.tunnelradio.com