I used the following scheme when my wife's business moved into a
pre-wired office in 1986. We duplicated the setup in an new office in
2003.
Each workstation has 4 8P8C jacks wired USOC-568 A or B from each
workstation via CAT-5 cables to similarly wired jacks in a patch
panel on a rack in the N (network) room. Any of the jacks can be used
for:
10-Base T Ethernet
100-Base T Ethernet
1000-Base T Ethernet (in the new office with a CAT-5e cable
installation certified by the installer)
serial connections (using RJ-45 to 8P8C adapters)
audio (using 10x audio isolation transformer on each end
mounted in an old Farallon Systems EtherTalk connector dongle)
phone using a 6P4C RJ-14 jumper.
Note that the third pair of a RJ-25 (three pairs in a 6P6C plug) will
travel over different pairs in the cable. That is not an issue for
analog or Panasonic digital hybrid telephone sets. This might be an
issue for the older generation of Panasonic proprietary telephones
that use the third pair (for intercom?). A purist might create
specialized jumpers between 8P8C and 6P4C connectors on each end to
make all of the pairs line up, and to avoid (small) problems that
arise when plugging in a 6P plug in a 8P jack..
For connections to the Panasonic Digital telephone, I used a 25-pair
CAT-3 cable with Amphenol connectors on each end to connect the phone
system to the back of a panel that splits out each RJ-21X 25-pair
Amphenol connector to 8 * 6P6C jacks wired RJ-25. These panels are
available for two or more Amphenol connectors from Ortronics and
others. The incremental cost of additional capacity is very small.
I bought a panel with space for 6 Amphenol connectors. This will
accommodate a 32 extension KX-TD phone system with two spare Amphenol
connectors. I used one connector to connect the incoming POTS lines
(2 lines per jack for Panasonic), and the output of a hardwired DSL
splitter. One punch-down block wired to a 25-pair Amphenol connector
that connects the POTS lines to the 25-pair cable is mounted high so
that it is not accidentally modified.
With this scheme, we contracted for someone to pull, terminate, and
certify the network wires to the workstations and a rack-mounted
patch panel ahead of move day. We purchased pre-fabricated cables
that we plugged-in on-site during move day. The punch-down tool was
used to terminate 8 lines + DSL from the old office on move day, and
kept holstered afterwards.
This has enabled my wife (and me sometimes) to move/add/change
locations of phones as needed. We can troubleshoot the incoming phone
lines with no punch-down tool required. Some of the workstations need
multiple Ethernet connections (printer, 2nd computer) and some need
multiple phone connections (fax, postage machine). The flexibility
has been incredibly useful. The wiring is ready for VoIP via POE
phones.
This is late at night. I hope that I correctly typed all of the
cable, jack and plug designations.
Good luck,
Paul H. Gusciora
San Rafael, CA
--- Original Text ---
Date: Wed, 23 May 2007 14:53:17 -0400
From: "D.Pageau" <[EMAIL PROTECTED]>
Organization: Infodev EDI <http://www.infodev.ca>
To: [email protected]
Subject: KX-T: RJ45 Telco Patch Panel
Sender: [EMAIL PROTECTED]
All my cable infrastructure is built using CAT5 and RJ45. In the data
room all cable ends in the same RJ45 patch pannel.
Using a cable as data or voice is only a mater of connecting a patch
cord to Ethernet Switch or Phone System (Dual KX-TD1232) as needed.
Right now, for the phone system, the centronics cable is punch connected
to the back of RJ45 data patch panel.
I'm looking for a similar solution but instead of punch down i'd like to
use a RJ45 patch panel with centronics in the back. Using
centronics<->centronics instead of punch down.
24xRJ45, 6 conductor on each RJ45, 3 centronics
or
48xRJ45, 6 conductor on each RJ45, 6 centronics
So far i've found this product, no luck it's RJ11 (or RJ12 ?) not RJ45.
http://www.icc.com/media/spec/210.pdf
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