958-000289-001, June 2003)

Overview

35Director 2/64 Installation Guide

Figure 5: Loopback plug

■ Fiber-optic protective plug—For safety and port transceiver protection,

fiber-optic protective plugs, as shown in Figure 6, must be inserted in all

director ports without fiber-optic cables attached. The director is shipped with

protective plugs installed in all ports.

Figure 6: Fiber-Optic protective plug

■ Null modem cable—An asynchronous RS-232 null modem cable, as shown

in Figure 7, is required to configure director network addresses and acquire

event log information through the maintenance port. The cable has nine

conductors and DB-9 male and female connectors.