director 2/64 service manual

director 2/64 service manual 1–29
General Information
Figure 1–10: SFP fiber-optic loopback plug
• Fiber-optic protective plug—For safety and port transceiver protection,
fiber-optic protective plugs (Figure 1–11) must be inserted in all director ports
without fiber-optic cables attached. The director is shipped with protective plugs
installed in all ports.
Figure 1–11: Fiber-optic protective plug
• Null modem cable—An asynchronous RS-232 null modem cable (Figure 1–12)
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 1–12: Null modem cable