10BASE-T Network
2-2 Network Requirements
10BASE-T Network
Whenconnectinga10BASE‐Tsegmenttoanyofthefixedfrontpanelportsofthe2G4082‐25,
ensurethatthenetworkmeetstheEthernetnetworkrequirementsoftheIEEE802.3‐2002standard
for10BASE‐T.RefertotheCablingGuidefordetails.
100BASE-TX Network
Thefixedfrontpanelportsofthe2G4082‐25provideaconnectionthatsupportsCategory5UTP
cabling.ThedeviceattheotherendofthetwistedpairsegmentmustmeetIEEE802.3‐2002
100BASE‐TXFastEthernetnetworkrequirementsforthedevicestooperateat100 Mbps.Referto
theCabling
Guidefordetails.
1000BASE-T Network
The2G4082‐25 supports10/100/1000 MbpsbymeansoffixedRJ45frontpanelconnectors.These
connectionssupportcopperwireconnectionsthatcanoperateupto1000 Mbps.Thedeviceatthe
otherendofthetwistedpairsegmentmustmeetIEEE802.3‐2002networkrequirementsforthe
devicestooperateatGigabitspeed.
1000BASE-SX/LX/ELX Network
TheoptionalMini‐GBICsprovideaGigabitEthernetconnectiontotheoptionalnetwork
expansionmodulestoprovidefiber‐opticconnectionsoperatingat1000 Mbps(1 Gbps).Other
Mini‐GBICsmaysupportdifferenttypesofcablingconnections.Thedeviceattheotherendofthe
fiber‐opticconnectionmustmeetIEEE802.3‐2002Gigabit
Ethernetrequirementsforthedevicesto
operateatGigabitspeed.RefertoAppendix AforfurtherdetailsonMini‐GBICspecifications.
Note: If a port is to operate at 100 Mbps, Category 5 cabling must be used. Category 3 cabling
does not meet 100 Mbps specifications. For 10 Mbps operation only, Category 3 or Category 5
cabling can be used. Refer to “100BASE-TX Network” on page 2-2 for information about
100BASE-TX networks and cabling.
Note: The fixed ports of the module support Category 5 UTP cabling with an impedance between
85 and 111 ohms for 100 Mbps operation. The module is capable of operating at 10, 100, or 1000
Mbps and can automatically sense the port speed of the other device and adjust its speed
accordingly.
Note: The fixed ports of each module support Category 5 UTP cabling with an impedance between
85 and 111 ohms for 100 and 1000 Mbps operation and can automatically sense the port speed of
the other device and adjusts its speed accordingly.