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TC3720
User's Manual
Rev. 1.5
Chapter 1 - Overview
Features
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Self-Healing or Redundancy Capable (recover time is less than 250ms (when connected
in a ring setup)
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One Management Port for Advanced Configurations and Status Monitoring
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Six 10/100 Full/Half Duplex Auto-Negotiation Twisted RJ-45 Ports
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Two 100 Full Duplex Fiber Optic Pair Ports
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Converts Twisted Pair Media (RJ-45) to Fiber Optics
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Rate Limiting or Bandwidth Control on Copper Ports
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MDI/MDIX Auto Detection and Operation on Copper Ports
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Multimode (1310nm) and Single Mode (1310nm/1550nm)
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Standard Single Mode Distances 50km (optional 100km)
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Hardened Temperature (-40
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C to 80
o
C) - Optional
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Standalone/Rackmount
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Alarm Relay
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Web-Based/Serial Configuration
Standards
IEEE 802.3, 802.3u, and 802.3x
Description
Intended for Multidrop Self-Healing Ring (SHR) topologies, the TC3720 Ethernet Fiber Optic Switch
interconnects up to six 10/100M devices at each drop. The ring can consist of either multimode or single mode
fibers or CAT5 UTP cables. Fault recovery time is less than 250 milliseconds.
The TC3720 offers a sophisticated Self-Healing Ring scheme. Fault conditions are detected on both Tx and
Rx, upstream and downstream of each unit, and automatically re-routed to maintain Ring integrity.
A Web-based configuration user interface is provided to view and change network settings such as IP
Address, Subnet, Gateway, Speed, Half/Full Duplex, Name, Password and other parameters. It also monitors
the fiber ring status, alarm conditions, fault locations for local and remote units. The TC3720 can also be
configured through a serial console (Out-of-Band).
The TC3720’s store-forward switching technology eliminates the congestion problem inherent to the
contention-oriented Ethernet CSMA/CD protocol. This improves predictable response times under heavy
network loads. Previously, expensive routing technology was used to alleviate congestion from heavy traffic
loads.
The TC3720 offers two multimode (1300nm) or single mode (1300/1550nm) ports and six independent
Ethernet 10/100-Base Auto-Sensing switched ports. As options, there are two versions (Model TC3720T)
for extreme temperature applications (-20° to 70°C, -40° to 80°C).
Power is 12VDC, optional 24VDC, -48VDC, 125VDC or 115/230VAC. Power redundancy is standard on
12VDC. The unit is 19" rack mountable. Optical connectors can be ST, FC or SC.
