Specifications

Planning the System
28 025-9581M
System Layout
The amount of information you will need to plan for and eventually collect about your Fire
Station Alerting System is determined by its size and complexity.
If the system is constructed like the one in Figure 7, then the only information you will
need is “names” and IP addresses for each of the computers and Station Transponder Units
in the system.
Since everything in the system is on the single, common network, they will all use the
same Subnet Mask. There is no Gateway address to keep track of because nothing is being
routed to another subnet.
Figure 7: A Simple System without any Subnet
In a medium sized system, like the one in Figure 8, the console computers and the server
machine might all be on a common subnet because they are all located in the same
building. However, the Station Transponder Units might be connected to a separate subnet
that existed outside of the dispatch center. This subnet would be connected back to the
server subnet by a router.
In this case the units in the dispatch center and the Station Transponder Units might or
might not share the same Subnet Mask. The Station Transponder Units will also need to be
given the Gateway address that the router uses when it passes packets out of its local
subnet to the subnet on which the server resides.
FSA Server
LAN Switch
Console #1 Console #2
IP Station
Unit #1
IP Station
Unit #2
IP Station
Unit #3
Ethernet