CHAPTER 4: OPERATION OPERATION
MULTILINK ML1200 MANAGED FIELD SWITCH – INSTRUCTION MANUAL 4–9
Each port has an Activity (ACT) LED indicating packets being received, a Link (LK) LED that
indicates proper connectivity with the remote device when lit, and a FDX/HDX LED to
indicate full-duplex mode when lit (or half-duplex when off). The 10/100 LED indicates
100Mbps speed when lit and at 10Mbps speed when off.
4.2.2.6 CC Module, 4 @100Mb multi-mode FX , MTRJ Small-Form-factor
The CC Module is a multi-mode fiber optic 4-port module equipped with a small-form-
factor MTRJ-type connector. It looks almost like an RJ-45 port, but it is black in color. The
MT-RJ’s small compact size connector and ease of connection make it a good choice for
100Mbps “fiber-to-the-desktop” Ethernet connectivity. When installed in a Multilink
ML1200 Switch, it supports fiber optic cable distances up the IEEE-standard 100Mbps
distance limits, i.e., typically 2km at full-duplex or half-duplex.
The functionality of this 100BASE-FX multi-mode 4-port module is essentially the same as
the ST and SC-types. It has the same LEDs per port indicating port activity (ACT), Link (LK),
and FDX or HDX operation.
4.2.2.7 C3 Module, “COMBO” 2@ 10/100Mbps RJ-45 and 2@100Mb multi-mode FX ,
MTRJ Small-FF
The C3 Module is a combo module with copper and fiber (Small Form Factor) MTRJ type
ports. The small size of MTRJ connectors provides an advantage of placing more ports on
one module. The C3 Module is equipped with Two 10/100 RJ-45 ports and Two MTRJ fiber
ports.
When installed in a Multilink ML1200 Switch, it supports the standard distances as per the
media. Each port has an Activity (ACT) LED indicating packets being received, a Link (LK)
LED that indicates proper connectivity with the remote device when lit, and a FDX/HDX LED
to indicate full-duplex mode when lit (or half-duplex when off). The 10/100 LED indicates
100Mbps speed when lit and at 10Mbps speed when off.
4.2.2.8 CD Module, 4 ports @ 100Mbps multi-mode LC connector SFF
The CD Module is a Four-port multi-mode fiber LC connector “small-form-factor” used
primarily in 100Mbps fiber-to-the-desktop links. When installed in a Multilink ML1200
Switch, it supports fiber optic cable distances up to the IEEE-standard 100Mbps distance
limits, i.e., typically 2km at full-duplex and 412m at half-duplex.
The compact size of the LC Connector reduces the size of wiring panels in wiring closets
while providing the advantage of “future-proof” fiber optic technology.