100BASE-TX Network
2-2 Network Requirements
100BASE-TX Network
Fixedfrontpanelportsofthe4H428249,4H428349,4H420372,and4H420272 providea
connectionthatsupportsCategory5UTPcabling.Thedeviceattheotherendofthe
twistedpairsegmentmustmeetIEEE802.32002100BASETXFastEthernetnetwork
requirementsforthedevicestooperateat100Mbps.RefertotheCablingGuidefordetails.
100BASE-FX Fiber-Optic Network
The4H428449DFEGoldmoduleprovides48portsthatsupport100Mbpsmultimode
fiberopticconnectivitythrough48fixedfrontpanelMTRJconnectors,whichsupport
100BASEFXfiberopticcabling.Thedeviceattheotherendofthefiberopticsegment
mustmeet100BASEFXFastEthernetnetworkrequirementsforthedevicestooperateat
100 Mbps.IEEE802.3u100BASEFXcharacteristicsforMultimodeFiberisasegment
lengthof412 meters(switchedport)inhalfduplex,2kilometers(swit chedport)infull
duplex.Thisdistancewillbeconsiderablyshorterfromarepeaterport.Makesureto
checkyournetworkdiameterspecifications.RefertotheCablingGuidefordetails.
Note: The fixed ports of the module support Category 5 UTP cabling with an impedance
between 85 and 111ohms for 100 Mbps operation.
The module is capable of operating at either 10 or 100 Mbps. The module automatically
senses the speed of the other device and adjusts its speed accordingly.