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Introduction 1 - 1
1
Introduction
This chapter briefly describes the capabilities and operation of the 3Com
ONline™ System Concentrator. Chapter 2 provides important information
for installing modules and verifying their operation.
If you are uncertain about legal network configurations when using the
ONline System Concentrator, refer to the appropriate ONline media module
manual.
Introducing the ONline System Concentrator
The ONline System Concentrator is a modular, fault-tolerant platform for
facility networks. The concentrator has a unique TriChannel® architecture
that allows it to run three network protocols concurrently. It is capable of
running Ethernet, Token Ring, and FDDI networks - all in the same
concentrator.
Ethernet connectivity is available on a variety of major cable types including:
❑ Fiber optic cable
❑ Unshielded and Shielded twisted pair wire
❑ Thin and Thick coaxial cable