Specifications

2-4 800 MHz System Planner R4-11-4G

BUSINESS CASE

Mobilizing the remote computer from the wireline network requires special

consideration to optimize operation and response times. Eliminating the

wire between the host computer and the remote computer and replacing it

with two-way radios, injects noise and delays not normally encountered in

wireline systems. Figure 2-1 illustrates the mobile computer connected

directly to the host. See the Private DataTAC™ Application Design Guide for

more information.

Figure 2-1. Wireline Network Computer Link to Host

This scenario causes the response times to be longer and message capacity

smaller than wire connected systems. Figure 2-2 illustrates the replacement

of the wire with radio to connect the remote computer to the host. See the

Private DataTAC™ Application Design Guide for more information.

Figure 2-2. Radio Data Network Computer Link to Host

The customer’s problem must be clearly understood by the solution team

and the problem can be stated several different ways. In a public safety

application, the problem presents itself from the perspective of different

participants.

A few examples of these problems are shown as follows:

• Police officers need to know who is likely to be in a vehicle before they

approach it during a traffic stop. Knowing whether an individual has

outstanding arrest warrants or if the vehicle is stolen will prepare the

officer.

• Citizens might complain to village officials if a traffic stop takes too long

or if the officer treats them like criminals.

Host

Computer/

Server

Remote

Computer

Radio