Specifications

17
5.7 Type 110 Terminals
Type 110 terminals allow wiring to be packed more
densely then Type 66. The smaller terminal causes
less disruption to high frequency signals, making 110
termination the preferred connection for LAN use. A
typical 110 module includes a standoff. Building
wiring is routed in these channels. It is brought out
from the standoff and punched down to a terminal.
Then another 110 block is inserted over the base.
Cross-connect wire is punched down to the upper
block.
The same insulation displacement terminal used on
Type 110 blocks is also use on receptacles designed
for Cat3 and Cat5e. LAN wiring is not cross
connected as in telephone practice. When a LAN is
installed the cable from each receptacle is connected
to patch panel consisting of a large number of modular jacks. Patch cable, terminated with modular plugs,
is used to interconnect the patch panel to LAN electronics.
5.8 Special Tools
Proper tooling is absolutely essential to produce a reliable network. Do not attempt to install and terminate
network wiring without proper tools.
Tool
Purpose
Wire Cutters
Cut Cable to length
Jacket Stripper
Special Stripper to remove the outer cable jacket
Punchdown Tool
Terminate 66 and 110 blocks
110 Blade
Terminate 110 blocks
66 blade
Terminate 66 blocks
Crimper
Crimps wires into modular Plug
Fish tape
Used to snake wire through walls
Circuit Tester
Indicates polarity and loop current of phone circuit
LAN Tester
Verifies correct wiring of Cat3 and Cat5e LAN
Cabling should be tested after installation; simple testers are in the $100 US range making them expensive
for do-it-yourself installation. An ohmmeter will verify end-to-end continuity uncovering many common
wiring errors however it will not find split-pairs. Wiring is paired to reduce noise susceptibility; signals
traveling on one wire are almost exactly balanced out by signals of opposite polarity on the other wire in
the pair. If the pairs are incorrectly terminated this cancellation does not occur. Testers verify each pair is
properly terminated; the cable is not crushed or excessively untwisted. These types of installation errors
may work with 10Mbps Ethernet but will break Fast and Gigabit Ethernet.
Figure 16 Jacket stripper
Figure 15 66/110
Punchdown
Figure 14 RJ11/45 Crimper
Figure 13 Type 110 Punchdown block