Cisco CX-FEIP-1FX= Installation and con?guration Installation Manual page 9

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100BASE-T4—100BASE-T, half and full duplex over Category 3, 4, or 5 UTP or shielded
twisted-pair (STP) cabling with four pairs; also called 4T+ or T2, which is 2-pair UTP over
Category 3 cable.
Each physical layer protocol has a name that summarizes its characteristics in the format
speed/signaling method/segment length, where speed is the LAN speed in megabits per second
(Mbps), signaling method is the signaling method used (either baseband or broadband), and segment
length is typically the maximum length between stations in hundreds of meters. Therefore,
100BASE-T specifies a 100-Mbps, baseband LAN with maximum network segments of 100 meters
(or 400 meters for 100BASE-FX).
IEEE 802.3u 100BaseT Specifications
This section provides specifications for IEEE 802.3u 100BaseT. Table 1-1 provides cabling
specifications for 100BaseTX Fast Ethernet transmission over UTP and foil twisted-pair (FTP), and
100BaseFX Fast Ethernet over fiber-optic cables. It also summarizes IEEE 802.3u 100BaseTX and
100BaseFX physical characteristics. Also see Figure 2.
Table 1 Specifications and Connection Limits for 100BASE-TX and 100BASE-FX Transmission
Parameter 100BASE-TX
Cable specification Category 5
Maximum segment 100 m
3
length (half-duplex)
Maximum segment 100 m
3
length (full-duplex)
Maximum network 200 m
length (half-duplex, one
4
repeater)
Data rate 100 Mbps
Signaling method 4B/5B block coded, scrambled, with
MLT-3 line coding
Connector SC-type: dual simplex or single
duplex for RX and TX
Topology Star/hub
1. EIA/TIA-568 or EIA-TIA-568 TSB-36 compliant.
2. Cisco does not supply Category 5 UTP RJ-45 cables. However, they are available commercially.
3. Data Terminal Equipment (DTE to DTE), see Figure 2.
4. DTE to Repeater to DTE, see Figure 2.
1 2
UTP , 22 to 24 AWG
Fast Ethernet Interface Processor (FEIP) Installation and Configuration
100BASE-FX Multimode
62.5/125 multimode optical fiber
412 m
2000 m
272 m
100 Mbps
4B/5B block coded, with NRZI
line coding
RJ-45 (ISO/IEC 60603-7:-1990
Star/hub
IEEE 802.3u 100BaseT Specifications
100BASE-FX Single Mode
9/125 micron single-mode optical fiber
N/A
10,000 m
N/A
100 Mbps
4B/5B block coded, with NRZI line
coding
Single mode SC-type: dual simplex or
single duplex for RX and TX
Star/hub
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