Page 2-12
Installation
Wiring RJ21 Installations
The 10T Hub12 provides an additional RJ21 connector to provide an alterna-
tive way to wire the workstations to the hub. Instead of having twelve cables
going to the RJ45 ports on the hub, a single cable with 25 pins of twisted
pair wires inside and RJ21 connectors at the ends can be used instead. Thw
twisted pairs of wires are distibuted to the workstations through a punch-
down block. Follow the instructions below.
1
Install the Asanté 10T Hub and network punchdown block in the
wiring closet, and interconnect them with an Amphenol cable.
The 50 rows of pins on a network punchdown block can be logi-
cally grouped into sets of four rows. Each set represents the con-
nections necessary for one branch or port of the network. A
network punchdown block has 50 pins, therefore containing
enough rows of pins for 12 ports. The remaining two rows of
pins are reserved for future use.
2
Cross connect the wires from the network punchdown block to
the distribution punchdown block.
3
Run two pairs of 24 guage wire from the network punchdown
block to a RJ45 wall jack near each workstation. The maximum
distance between the punchdown block and wall jack is 100
meters (328 feet) using 24 AWG wire.
▲
Keep careful track of the wall jack wiring. When you
later return to the wiring closet to wire the punchdown
block, you must be able to exactly determine the wall
jack and pin destination of each wire.
When wiring the wall jack, be sure that you wire the terminal
posts which correspond to pins 1, 2, 3, and 6 (see Figure 2-8 on
page 2-13). This sequence repeats itself for the remaining ports
(four rows per port) on the punchdown block.
10T Hub Ch 2 Page 12 Thursday, August 22, 1996 4:25 PM