HP 200 Series Services And Applications page 227

ISDN Wide Area Network Design: Dry Creek Joint Elem. School District
ISDN and point-to-point circuits are the only carrier options available to the
district. The service costs of both options are shown in table 1.
Table 1. WAN Cost Comparison (Q1/1993)
Circuit Type
56 Kbit/s point-to-point (4 locations)
ISDN (4 locations)
The traditional point-to-point extended-LAN topology that was considered is
shown in figure 1.
Hub
R
R
Bridge
Figure 1. Point-to-Point Network Design Option
Monthly Cost Installation Cost
$324.30 $ 3,720.00
110.50 849.75
R
R
R
Network Topology
Hub
Hub
Hub
3-33