Network Design Considerations
2-9
TIWAY 1 Ti505 NIM User Manual
Figure 1 illustrates the relationship of cable distance to the number of secondaries for
different baud rates for two types of twisted pair cable. Note that the cable distance (in
thousands of feet) is shown vertically; the maximum number of units that may be at-
tached is shown horizontally.
Figure 1 Number of Local Line Secondaries versus Cable Length
As shown in Figure 2Figure 1, when you use Belden 9860 cable (or its equivalent), up to
75 stations can be attached to a network operating at 38K bps and having a spine length
of 20,000 feet. At 115.2K bps, the maximum length of a Local Line network having 254
stations is 10,000 feet.
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