I need to make CAT5 connection to the 66 block. Right now it is
really just phone connection. How do I connect the wire to the
slots? Do I need to strip off a bit to the wire before insert into the
It does not look like there is any sharp edges inside those slots, unlike
the CAT5 jacks where the edges automatically take off some wire skins.
Also is there anyway one connect a old phone to a CAT5 jack, which just
serves as a phone jack at this time? Are there any adapters for that?
Nope. You need to buy the proper tool, it's called a "Punchdown
Tool" I just did a quick search via MSN, came up with a bunch of
results, first one I opened was $25. That sounds about right.
They were actually more expensive back in The Old Days (because
they were 'special tools'?) but now everybody and their brother
is hanging wiring boards in their basement, so I guess this is
the upside: cheaper tools.
It's a spring-loaded "trigger" thing, that automatically cuts
one side of the wire when it punches (the side NOT coming from
your cable!) Once you see it work, you'll understand. But
there is a method to doing it right, you might want to look
for some "how to" instructions while you're surfing.
You might find an adapter, but I would go with a wall plate
that has "snap in" jacks, where you can have a double jack on
one plate, one of them being an RJ-11, the other an RJ-45.
Much neater and less prone to "wiggle failure".
Baisez-les s'ils ne peuvent pas prendre une plaisanterie
Since I am just use the CAT5 for voice phones, I just did it slooply:
I put the wires on the slot, cut it with a scissor, and pushed it down
with a small screw driver. I used a voice jack (RJ11?) to test it. It
worked. So I connect several lines this way - easy and cheap. Saves
me a trip to HomeDepot, and a few dollars. This is indeed for
Now if I ever switch to DSL from cable modem, I wonder if my
connection speed will get effected? But I would guess my connection
is not more sloppy than the most of the analog phones.
ABC spilled my beer when they jumped on the table and proclaimed in
Ideally, a punchdown tool would be used....however, if you strip the wire,
then force the bare part in using small needle-nose pliers, you'll still
make a good enough connection for standard analog/phone...
There are probably millions of 66 blocks that are not cat 5 compliant.
These will mostly be the older installations since 66 blocks were not cat 5
compliant for several years after their introduction. Most of them
manufactured in the last...oh...5-7 years s/b cat 5 compliant.
This is definetly true. I have run many 10baseT Ethernet connections over
66 blocks, both old and new and they worked just fine, even with CAT3
cabling. But the 66 blocks that are CAT5 compliant were "re-engineered" to
reduce the amount of metal in them. I don't remember the technical reasons
for reducing the amount of metal but I think it has something to do with
electrical eddy currents and impedance. Anyway, any 66 block should be good
for data rates up to 10Mbps. This would certainly include voice lines
(telephone or modem, etc.), DSL, T-1, 10baseT, etc. Beyond that, it gets
kinda iffy and there are several variables. If you are talking about
100baseT Ethernet over CAT5 66 blocks, if the cable runs are short, few
cross-connects, the connections are good (this is where a *good* punch-down
tool comes in), etc., etc., it will probably work. As the cable length
grows, or the connections start to come loose, or you have too many
cross-connects, or the 66-block has seen a lot of punch-downs, or this, or
that, then you will start to see errors occurring, and worst case they will
Near End Cross Talk (NeXT)
At higher frequencies those big metal strips become antennas and signals bleed
over between the pairs.
You can also make a Cat5e a Cat3 or less by not following good termination
practices. Maintain the twists as far as possible and keep the leads short
where they exit the cable.
An RJ11 plug will fit just fine in an RJ45 jack. Use the blue and
blue/white pair for telephone, and they go on the center pins (unused by
ethernet and reserved for telephone.)
I have a couple of rooms in my house wired for both ethernet and
telephone on the same cable -- one uses a single RJ45 jack and the other
splits out the blue/blue/white pair to an RJ11 jack on the same
faceplate. It's better to use separate cables and jacks.
I like to use cat3 (2 pairs) for telephone and cat5 (or maybe it was 5e)
for ethernet. But you can run telephone and ethernet on a single cat5
cable. I think Xerox invented this scheme and called it "Starnet." Slit
the jacket at the hub end of the cable and carefully pull out the
blue/blue-white pair without disturbing the other pairs. Terminate the
remaining 3 pairs as usual and connect the blue/blue-white pair to your
phone block (green/red for 1st line, yellow/black for the 2nd.) I don't
know which is tip and which is ring, but most of the time it doesn't
I wouldn't try it for gigabit ethernet. I also suspect you may get data
errors when the phone rings, but the network protocol will just
retransmit the screwed-up packets.
Check the TIA-568 specs, this isn't advised. You can get away with it
but you'll degrade your connection speed. 100 blocks aren't too
pricey. If memory serves me correctly telephone lines carry some
voltage and you don't want that voltage traveling down the same line
as your network data.
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