Page 39 - Optical Switching And Networking Handbook

24 Chapter 1

Table 1-2
T3 Line East to West Coast Cost per Item
Comparing the
Costs of Using Per month $80,000
a Fiber Link for Per day based on a 20-workday month $ 4,000
T3 Access
Per hour based on a 8-hour workday $ 500
Per minute at 60 minutes per hour $ 8.33

Per second at 60 seconds per minute $ 0.14
Per bit at 45 million bits per second $ 0.000000003

Table 1-3
@ $560,000/ @ $280,00/ @ $175,000/
Comparing the Item Month Month Month
Cost of Using a
Copper-Based T3 Cost per day
with 20-day month $28,000 $14,000 $8,750
Access Link
Cost per hour
with 8-hour day $3,500 $1,750 $1,094
Cost per minute $58.34 $29.17 $18.23

Cost per second $0.972 $0.49 $0.30

Cost per bit $0.000000021 $0.000000012 $0.000000007

The Emergence of Wavelength-
Division Multiplexing

As early as 1988, synchronous optical networking (SONET) and syn-
chronous digital hierarchy (SDH) were the hottest discussion topic in
terms of the emerging backbone fiber standards of all future
telecommunications networks. Both SONET and SDH were seen as
the panacea for carriers in developing multiplexing standards and
techniques to reinforce the network. In 1997, wavelength-division