Page 306 - Optical Switching And Networking Handbook

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INDEX

Symbols AT&T, North American Digital Hierarchy, 54
ATM (Asynchronous Transfer Mode)
1,000 Base F. See Gigabit Ethernet. ATM over SONET, 200–201
100 Base F. See Fast Ethernet. bandwidth speeds, 109
attenuation, 36
AUGs (AU Groups), SDH, 93
A AUs (Administrative Units), SDH, 91

ADMs (Add-Drop Multiplexers)
high-speed applications, 188 B
SONET, 75–77
B-ISDN (Broad Band ISDN), 82
advantages
backhoe fade, 50
DWDM
bandwidth
cable uses, 227
ATM, 109
cost efficiency, 230–231
determining for fiberoptics, 51
future upgrades, 232–233
fiberoptics over other media, 44 drop in costs, 107
DWDM, 116
SDH, 100
Frame Relay, 108
SONET, 55
increasing demand, 9, 160
transparent optical networks, 222
broadening route diversity, 164
WDM, 157
forces behind, 107
AM (Amplitude Modulation), lasers, 51
matching demand to infrastructure, 161
amplifiers, 3, 217
optical switching, 142–143
angle of incidence, bending fiberoptic
rewiring example, 28
cable, 45
basic components of fiberoptic system
applications demodulators, 34
DWDM, 205–206 detectors, 34
long distance carriers, 165 lasers, 33
high-speed, 187 LEDs, 33
APS (Automatic Protection Switching), modulators, 33
SDH, 101 bending fiberoptic cable, 45, 49
ASPs (Application Service Providers), benefits of fiberoptics over other media, 114
metropolitan optical switching, 126 BER (Bit Error Rate), 18, 44
asynchronous transmission bit stuffing, DS-1, 59
signaling, 61 BITS (Building-Integrated
timing sources, 58 Timing System), 63

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