10BASE5

E81124

10BASE5 is the original thick coaxial Ethernet standard that operated at 10 Mbps over relatively long cable runs and formed the basis of early wired local area networks.

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Observed surface forms (1)

Surface form Occurrences
10BASE-5 1

Statements (47)

Predicate Object
instanceOf Ethernet physical layer standard
IEEE 802.3 standard
accessMethod CSMA
surface form: CSMA/CD
alsoKnownAs 10BASE5
surface form: 10BASE-5

thick Ethernet
thicknet
cableType thick coaxial cable
collisionDetectionMethod voltage level monitoring on the coaxial bus
collisionDomain entire segment is a single collision domain
dataRate 10 Mbit/s
doesNotSupport full-duplex operation
encoding Manchester encoding
impedance 50 ohms
introduced 1980s
layer OSI layer 1
maximumCableDiameter approximately 10 mm
maximumNetworkSpanWithRepeaters 2500 meters (typical 802.3 rule)
maximumNodesPerSegment 100
maximumRepeaterCount 4 repeaters between two stations (typical 802.3 rule)
maximumSegmentLength 500 meters
medium coaxial cable
minimumNodeSpacing 2.5 meters
nameMeaning 10 for 10 Mbit/s
5 for 500 meter maximum segment length
BASE for baseband signaling
physicalMediumDependentSubtype 10BASE5 PMD
powerFeeding transceiver powered from attached station via AUI
replacedBy 10BASE-T
10BASE2
requires grounding at one end of the cable
proper cable termination to avoid reflections
terminators at both ends of the bus
transceiver for each attached station
segmentRole shared medium for multiple hosts
segmentType backbone segment
specifiedIn original Ethernet specification
standardizedIn IEEE 802.3 Ethernet standard
surface form: IEEE 802.3
status obsolete
supports half-duplex operation
topology bus topology
usedFor early local area networks
uses vampire taps to connect transceivers to the cable
yellow-jacketed coaxial cable in many implementations
usesConnectorType N connector (for cable ends)
vampire tap (for transceiver attachment)
usesTransceiverAttachment AUI
wasCommonIn early corporate LAN backbones

Referenced by (2)

Full triples — surface form annotated when it differs from this entity's canonical label.

10BASE5 alsoKnownAs 10BASE5
this entity surface form: 10BASE-5
10BASE2 predecessor 10BASE5