Visara 1174-65S - Manual (Page 14)

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1174-65S/90S Communications Servers Hardware Reference Manual
707020-002
be connected to the BNC connector. End points of the coax cable must be terminated with a
standard 50-ohm impedance. A standard Ethernet twisted pair cable can be connected to the
RJ45 phone jack.
AUI
10B2
10BT
AUI or 10 Base 5
Coax or 10 Base 2
Twisted Pair or 10 Base T
Figure 2-3. Ethernet Interface Select Switch
10/100 Mbps Fast Ethernet (FET)
The single RJ-45 connector on the network cable supports 10 Mbps or 100Mps speeds.
NWAY auto-negotiation enables the 10/100Mbps Ethernet NICs to automatically run at the
speed that the connected hub supports. The 10/100Mbps Ethernet NICs works with products
that comply with IEEE 10BASE-T and 100 BASE-TX specifications.
10BASE-T Operation
10BASE-T is the Institute of Electrical and Electronics Engineers (IEEE) 802.3 standard for
Ethernet signaling over unshielded twisted-pair wire at 10 Mbps.
Ethernet, as the most widely used network protocol, uses 10BASE-T as its primary cabling
scheme. Ethernet’s characteristics include:
• A data rate of 10 Mbps.
• A broadcast architecture.
• A specific media-access control (MAC) scheme.
The 10BASE-T name indicates a signaling speed of 10 Mbps and twisted-pair wiring. Base
stands for baseband, which denotes a technique for transmitting signals as direct-current
pulses rather than modulating them onto separate carrier frequencies.
A wiring topology using 10BASE-T specifies a wiring hub, cable arranged in a star
configuration, and unshielded twisted-pair cable. Each node has a separate cable run that
must not exceed 100 meters (328 ft) from the node to the hub.
100BASE-TX Operation
100BASE-TX is the IEEE 802.3u standard for Fast Ethernet signaling over Category 5 UTP
or STP wire at 100 Mbps.
Based on an extension to the IEEE 802.3 Ethernet specification, Fast Ethernet’s characteristics
include:
• A data rate of 100 Mbps.
• A broadcast architecture.
• A specific media-access control (MAC) scheme.