Deploying a
network jack can
save up to 60
percent versus
traditional cabling
expansion and port
activation.
5
3 C O M
®
N J 10 0 N E T W O R K J A C K
Why don't you have a punch-down
connector instead of an RJ-45 uplink
port on the back of the 3Com NJ100
Network Jack?
There are two main reasons why the
3Com NJ100 Network Jack doesn’t
connect to horizontal cabling via an
IDC punch-down. First, the product is
designed to reduce the cost of moves,
adds, or changes as a result of either
reconfiguring cubicles or moving to
another facility. The RJ-45 connection
allows you to easily install and, when
necessary, remove the network jack.
Second, BICSI’s wire test standards
prohibit you from testing the cabling
system through active components. If
you were to punch down the horizon-
tal cabling directly to the back of the
network jack, you would not be able
to test the cabling system according
to the BICSI standard. 3Com is work-
ing to develop a version of the
network jack that will have a punch-
down connection that does not
violate those wire test standards.
Can I daisy-chain multiple 3Com
NJ100 Network Jacks together?
If so, how many?
Although it is possible to daisy-chain
multiple 3Com NJ100 Network Jacks
together, we do not recommend it. A
Power-over-Ethernet solution will not
provide enough power to multiple
network jacks. With local power, you
will be constrained by switching-
topology considerations.
What types of pass-through
connectors do you support?
The adapter plates for the pass-
through connections support Panduit-
or Avaya-brand interface modules, RJ-
11 or RJ-45 connectors.
The 3Com NJ100 Network Jack
single-unit pack includes three
adapter plates—blank, Avaya, and
Panduit. The 20-unit packs do not
come with adapter plates, which
must be ordered separately.
Panduit interface modules:
Single category 3
CJ66BL (black)
module
CJ66EI (ivory)
Single category 5
CJ588TBL (black)
module
CJ588TEI (ivory)
Single category 5e
CJ5E88TBL (black)
module
CJ5E88TEI (ivory)
Avaya interface modules:
Single category 3
107321697 (black)
module
107321721 (ivory)
Single category 3/5e
108232695 (black)
module
108232737 (ivory)
Isn’t this more expensive than just
activating another port in my closet?
You cannot get the same functionality
by activating another port in your
closet that you can get from installing a
3Com NJ100 Network Jack. To get the
same number of active connections,
you would have to activate three new
ports in your closet, which is more
expensive than the cost of installing
a single network jack. In a new
installation, it is significantly more
expensive—up to 60 percent—to
deploy a traditional cabling system and
get the same number of active connec-
tions as deploying the network jack.
Competitive Positioning
Are there other products like this on
the market?
The 3Com NJ100 Network Jack is
unique in the networking world. As a
product, it is most often compared to
a desktop hub or switch. As a cabling
solution, it is compared to traditional,
passive-component cabling systems.
Isn’t this more expensive than just
adding a desktop hub or switch?
People ask why they shouldn’t just
buy a desktop hub or switch. A price
comparison between a 3Com NJ100
Network Jack and a desktop hub is
an apples-to-oranges comparison.
