Specifications
lists the specifications of a network cable.
Table 4-8
Specifications of a network cable
Item
Description
Connector type (X1/X2)
RJ45 connectors
Cable type
Category-3 and category-5 unshielded twisted pairs
(UTP-3 and UTP-5) or shielded twisted pairs (STP)
Color
Dark gray
Characteristic impedance
100.0 Ω
Diameter
0.510 mm
Breakdown voltage
500.0 V
Impedance
93.8 Ω
Pin
8 pins
Frequency
0 MHz to 100 MHz
Frequency attenuation
22 dB/100 m@100 MHz
Fireproof level
CM
Length
l
Straight through cable: 5 m, 10 m, 20 m, and 30 m
l
Crossover cable: 5 m and 30 m
4.6 Optical Fibers
An optical fiber connects the optical interface of a device to an upstream device or optical
network terminal.
Applications
An optical fiber carries optical signals and transmits them over short distance. An optical fiber
connects the following:
l
Optical interface on a board
l
Optical distribution frame (ODF) or the optical interface on another device
lists the classification of optical fibers.
4 Cables
Quidway S3300 Series Ethernet Switches
Hardware Description
4-10
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Copyright © Huawei Technologies Co., Ltd.
Issue 01 (2011-01-30)