Outdoor Surveillance
Railway

Application Overview

Centralized Traffic Control (CTC) railway signaling consoliates train routing decisions and is centrally managed by a remote dispatch which controls interlocking and traffic flows. Network management requires Ethernet system design, maintenance and control of the local network security, remediation of faulty equipment, maintaining appropriate quality standards and ruggedization to operate in harsh conditions.

Key Considerations

  • Redundant ring topology with millisecond scale network recovery for maximum uptime real-time video and data transmission.
  • Real-time link status & traffic statistics, informative network reporting functions.
  • Auto-provisioning so the network can be managed and necessary upgrades and configurations can be perfomed remotely.
  • Hardware which monitors board temperature and sends alarms.
  • EN 50155 railway certification to ensure long switch life and network reliability.

Key Volktek Benefits

  Feature Benefit
Reliability Redundant Power Remains On During Power Failure

1) Built-in surge protection, dual power sources, and battery back-up

2) Ensure stable device operations for 24/7 network reliability.

Availability Link Redundancy Fast Network Recovery

1) Rapidly react to physical link failure and recover immediately

2) Provide an alternate pathy link to support continuous transmission.

Performance Quality of Service (QoS) Define the Critical Networks Networks typically operate on a best-effort delivery basis, which means that all traffic transmitting from ports has equal priority and chance of being delivered in a timely manner.  When congestion occurs, the same traffic has an equal chance of being dropped.  When configuring the QoS feature, specific networks can be prioritized, optimizing the network performance and bandwidth utilization.
Security 802.1x RADIUS / TACACS+ Secure the Network by Authenticating the Users Allows the network administrator to specify a whitelist of allowed MAC addresses, allowing only those devices to connect to the network.  It also limits the number of devices connected to a single downlink port known as Dynamic Assignment.
Security e-mail Alarm Triggered Events Alert Via Email

1) Notify the administrator if real-time problems occur such as firmware or configuration changes, device status, link connectivity status, etc. 

2) Help administrators to quickly identify, isolate and resolve network issues.

Management Link Layer Discovery Protocol (LLDP) Access Device and Network Information Managed switches provide management of SNMP traps or alert messages sent from a remote SNMP-enabled device to a center SNMP server.
Management PoE ON / OFF + PD Alive Check Intelligent PoE+ for Powered Devices PoE switches can enable or disable the power supply to the powered devices.  The powered ports can send keep-alive checking packets to the devices to increase system reliability.

Application Diagram

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