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636 Chapter 16: Voice Techniques
Scenarios
Scenario 1
To help design the optimum solution and address the issues presented in this chapter, you have
contracted with the design professionals at RouteitRight to help you.
Championship Soccer, Inc. has contacted RouteitRight. Its MIS director has heard that it might
be possible to save money on its communications network. Its current network has a separate
voice network and a separate data network. The company locations consist of headquarters and
four branch locations. The voice network is connected via the PSTN. The data network is
connected via a T1 link.
Freddy Forklift recommends that Championship Soccer, Inc. replace their existing phone lines
with a VoIP solution. Freddy has read about CallManager, a Cisco VoIP solution. Peter Packett
agrees that the ultimate solution could be end-to-end VoIP. However, Peter thinks that
RouteitRight should recommend a phased-in solution, starting with toll bypass. Megg A. Bight
says that the cost savings that would be realized from turning off the tie-lines would be
significant. Even if the data circuit had to be increased to acknowledge the aggregate of traffic,
the cost of the increased bandwidth would be less than the cost of two separate circuits. Roddy
says that the converged solution will result in an overall lower total cost of ownership. In
addition to savings that result from sharing the same line, the costs of adding, moving, and
changing phone lines will go to zero.
Figure 16-10 depicts the Championship Soccer network as a separate voice and data network.
Figure 16-10
Championship Soccer Voice and Data Network
PSTN
R1
Local
LAN
R2
Local
LAN
WAN
Data
traffic
Data
traffic
Voice
traffic
Voice
traffic
87200333.book Page 636 Wednesday, August 22, 2001 1:41 PM