SMC Networks SMC7824M/FSW manual SFP Slots, Alarm Interface Port, 1 Optional SFP Transceivers

DESCRIPTION OF HARDWARE

SFP Slots

The Small Form Factor Pluggable (SFP) transceiver slots are shared with RJ-45 ports (ports 25~26 on the front panel or ports 27~28 on the optional modules). In its default configuration, if an SFP transceiver (purchased separately) is installed in a slot and has a valid link on its port, the associated RJ-45 port is disabled and cannot be used. The switch can also be configured to force the use of an RJ-45 port or SFP slot, as required.

Table 1-1 Optional SFP Transceivers

1000BASE-SX (SMCBGSLCX1)

1000BASE-LX (SMCBGLLCX1)

1000BASE-ZX (SMCBGZLCX1)

Note that 1000BASE-SX transceivers use multimode duplex fiber cable, while 1000BASE-LX and 1000BASE-ZX transceivers use single-mode duplex fiber cable.

Alarm Interface Port

The DB-15 alarm port on the switch’s front panel can be used to provide alarm, service port, and BITS clock reference interfaces. The switch supports two sets of alarm relay contacts (major and minor), and 4 external customer site alarm inputs. It also provides an alarm cutoff button (labeled ACO). Refer to “Connecting to the Alarm Port” on page 3-15for a description of the pin assignments used to connect to the alarm port.

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