958-000289-003, March 2005)

Director 2/64 installation guide 23

plug is shipped with the director, depending on the type of port transceivers installed. Both plugs

are shipped if short-wave laser and long-wave laser transceivers are installed.

Figure 5 Loopback plug

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

plugs (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 (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.

Figure 7 Null modem cable