?– Ability to grow Circuit-bonded pipes can grow with customer needs without
hardware replacement and truck roll. Bandwidth can be added remotely in small
increments.
?– Quality of service and protection Ethernet services based on circuit bonding
can provide carrier-grade services that are able to meet stringent SLA requirements
similar to TDM services.
100 percent Ethernet Reach
Historically, businesses have been connected to their service provider??™s network by copper
pairs, while fiber has been deployed slowly over time to meet increased bandwidth
requirements. Figure 10.13 contains a prediction for the number of businesses requiring
data connectivity at T1 or higher rates in the coming years. The graph shows the
number of businesses in locations with copper connectivity only and those with fiber
connectivity. Although fiber build-outs are occurring, the majority of businesses exist
at locations served only by copper. This will not change in the near future.
This data must be interpreted carefully. Deployed fiber is generally intended for the
service provider??™s use to interconnect facilities. Having fiber in place allows the service
288 Chapter 10
provider to efficiently support all of the customers in a large building.
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