Media IEEE Standard Connector
Twisted Pair (CAT 5E) 1000BASE-T RJ-45
NOTE:
It is recommended that high quality CAT. 5E cables (which work for both 100
Mb and 1000Mb) be used whenever possible in order to provide flexibility in a mixed-speed
network.
The following procedure describes how to connect a 1000BASE-T twisted pair segment
to the RJ-45 port. The procedure is the same for both unshielded and shielded twisted
pair cables.
1. 1000Base-T connections require that all four pairs or wires be connected. Insert either end of
the cable with an RJ-45 plug into the RJ-45 connector of the port. Note that, even though the
connector is shielded, either unshielded or shielded cables and wiring may be used.
2. Connect the other end of the cable to the corresponding device
3. Use the LINK LED to ensure proper connectivity by noting that the LED will be illuminated when
the unit is powered and proper connection is established
3.3 Table-Top or Shelf Mounting
The DFG48000 Manageable Switches can be easily mounted on a table-top or any suitable
horizontal surface, and has four rubber feet to provide stability without scratching finished
surfaces.
3.3.1 Rack-mounting
For 19” RETMA racks, regular DFG48000s Installation of a DFG48000 Fiber Switch in a 19” rack is
a simple procedure. The units are 1U (1.75”) high. When properly installed, the front-mounted
LED status indicators should be in plain view and easy to read. Rack-mount installation requires
special 19” rack-mounted brackets and screws (included with each DFG48000 unit). These
brackets attach to the front sides of the Switch (regular package, i.e., not the Reverse version),
which is then typically fastened into a standard 19” RETMA rack as shown here. The 23” brackets
and the ETSI (European metric, approx. 21”) brackets are also available (optional) for rack-
mounting of DFG48000 Switches. These brackets are popular in the Telco industry where they are
a standard for Central Office rack mounting purposes. The 23” and the ETSI brackets are mainly
used for larger equipment Fig 3.3.1 Mountings for DFG48000 units rack-mounted in frame
assemblies in rack-mounting frames where the rack-mount equipment is typically accessed in
operation from both sides. The bracket mounting holes in the sides of the DFG48000 permits it to
be mounted in various ways. The same holes fit all three types (19”, ETSI, 23”) of brackets. The
mounting for the 23” is illustrated in Figure 3.3.1 below. The brackets may be attached flush with
the front, or attached in the center for a set-back mounting which may reduce cabling torque. The
optional 23” brackets and the ETSI (21”) brackets each come as a pair in a package, along with
the necessary screws for attaching the brackets to the sides of the DFG48000 Switch unit. They
must be ordered as line items.