Speedy delivery
of additional bandwidth, unprecedented in the TDM world, is increasingly expected
these days.
With TDM, this would simply not be possible; there would be significant downtime,
change out in the physical ports on either end, and additional testing needed. An MEF
commissioned study using a realistic scenario of 100 users receiving a host of services
(private line and Internet access) over TDM (see Figure 1.15) showed that with Ethernet,
the service provisioning cycle was reduced by 14 weeks and yielded revenues of $7.5
million in this period alone.
Figure 1.15 Revenue acceleration (velocity) by employing Ethernet services
Private Lines-E1
Private Lines-E3
Internet-E1
Internet-E3
Internet-STM1
Internet-STM4
Total
$7.5MM for 100 users
Revenue Gain ($K)
$0 $2000 $4000 $6000 $8000
$700/month/user
$2500/month/user
$1500/month/user
$3500/month/user
$5000/month/user
$10000/month/user
Ethernet: From LAN to the WAN 37
Reduced Cost of Delivering Services Employing Ethernet in the Service Provider network
to deliver traditional data services has a substantial economic advantage in terms
of cost savings. A comprehensive study commissioned by the MEF compared capital
and operational costs incurred by a Service Provider to deliver a host of data services
to hundreds of small- and medium-sized enterprises over an (optical) Ethernet infrastructure49
versus those incurred employing a traditional SONET infrastructure.
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