PON Relatively low but requires expensive fi ber infrastructure. OPEX high due to
relatively limited management capabilities.
WDM Relatively high. Also requires expensive fi ber infrastructure but transports
other services as well.
FSO Relatively attractive, but when fi ber is the only alternative. Speed to market is
a plus.
TDM Relatively high, but supports other services as well. OPEX mitigated.
SONET Relatively high cost per user, but also supports other services.
RPR Relatively high, but with attendant benefi ts for mission-critical applications
deployed over fi ber rings.
Bridging Relatively attractive. OPEX fairly high due to complexity.
MPLS Relatively high in the access, but relatively attractive in core. Higher OPEX.
WiMax Relatively high primarily due to infancy. High OPEX due to newness of
technology. Speed to market defi nite plus.
TABLE 16.8 Economic Comparison of the Different Carrier Ethernet Solutions
514 Chapter 16
Assuming the Service Provider would likely use its existing TDM access infrastructure,
it would like employ an Ethernet over TDM solution (Chapter 7) and may use one
or more T1s bonded together to provide Ethernet access (since a bandwidth of 10M
would require 7 to 8 T1s).
Pages:
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143