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standards and guidelines for communication sites - Radio And ...

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EQUIPMENT CABLING CHAPTER 9: EQUIPMENT INSTALLATION<br />

Equipment<br />

Room Hub/Switch<br />

Dispatch<br />

Room Hub/Switch<br />

Fire Dispatch<br />

Server<br />

100 m<br />

(328 ft.)<br />

Police Dispatch<br />

Supervisor<br />

Service Computer<br />

FIGURE 9-14 ADDITIONAL HUB/SWITCH USED IN SINGLE CABLE RUN<br />

• If cable segments need to be extended beyond 100 m (328 ft.), an additional hub/switch may be<br />

installed. Each individual segment between hubs/switches shall not exceed 100 m (328 ft.).<br />

Figure 9-15 shows the cabling <strong>and</strong> network elements <strong>for</strong> distances exceeding 100 m (328 ft.). Note<br />

that no more than the one intermediate hub/switch shall be used. If the required distance is greater<br />

than as shown in Figure 9-15 on page 9-25, a specific cabling system shall be engineered. See<br />

ANSI/TIA/EIA- 569-B <strong>for</strong> additional in<strong>for</strong>mation.<br />

9-24 68P81089E50-B 9/1/05

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