Clear-Com Eclipse-Omega - Manual (Page 32)

Clear-Com Communication Systems
Eclipse Matrix Installation Instruction Manual
4 - 2
RJ-45 CABLES
The following section discusses the use of RJ-45 connectors for
connecting an Eclipse frame to panels and interfaces. It includes the
following topics:
• General discussion about RJ-45 connector cables
• Clear-Com kits and recommendation
• Installing RJ-45 connectors.
General Discussion About RJ-45 Connector Cables
The system wiring is with shielded CAT5 twisted cable with RJ-45
connectors on either end; however, there are various methods
available to deliver these cables from one place to another.
All Eclipse matrix panels have built-in RJ-45 connectors. Direct 4-pair
cable with RJ-45 connectors on either end can connect an Eclipse
matrix port to an individual panel.
Shielded CAT5 cables are available with RJ-45 terminations already
installed. Bulk RJ-45 connectors can be bought and installed on
custom length cables.
The term “category 5” (CAT5) refers to a communications cable
standard that calls out transmission characteristics of twisted-pair
cables for data communication use. For each increasing “category”
(CAT) number the guaranteed bandwidth for data communication
purposes is higher.
For the 4-pair wiring scheme between the frame panels, Eclipse uses
the AT&T T568B wiring standard for data cables. Cables for use with
Ethernet 10-BASE-T are of this type. Cables are available in solid or
stranded wire in #24 or #26 AWG.
Clear-Com Kits and Recommendation
There are at least five different wiring standards that use the RJ-45
connector. Although they look identical, many pre-made cables and
utility items, like couplers, will not work properly. It is essential to know
what wiring standard is used in any accessories.
Note: Long runs with flat cable are not acceptable. The data and
audio pairs are not twisted, therefore the crosstalk within
the cable is high.
The T568B standard is a mature, well supported standard that allows
many advantages. Fast easy termination of cables as well as the
availability of a vast array of wiring adapters and patching systems
allow great versatility for all applications of intercom wiring. RJ-45
connectors are easy and fast to connect to equipment. T568A cables
differ only on the color of the insulation on pairs 2 and 3. If the ends are