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Overview
Figure 5: Loopback plug
Figure 6: Fiber-Optic protective plug
32
Loopback plug—An SFP multi-mode (shortwave laser) or single-mode
(longwave laser) loopback plug, as shown in
port loopback diagnostic tests. One loopback plug is shipped with the director,
depending on the type of port transceivers installed. Both plugs are shipped if
shortwave laser and longwave laser transceivers are installed.
Fiber-optic protective plug—For safety and port transceiver protection,
fiber-optic protective plugs, as shown in
director ports without fiber-optic cables attached. The director is shipped with
protective plugs installed in all ports.
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.
Figure
5, is required to perform
Figure
6, must be inserted in all
Director 2/64 Installation Guide
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