| Author |
Message |
The Chairman
Guest
|
 Posted:
Sat May 28, 2005 3:50 pm Post subject:
Newbie question about punchdown blocks |
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Hi all,
I am a newbie to the world of installation, and I really want to get a
good grasp on punchdown blocks. Is there a simple website or reference
that someone can point me to. After much googling I have come up empty,
If not, I have some basic questions that hopefully someone can answer:
How do punchdown blocks work? To clarify, are certain posts wired to
other posts?
And, if you were wiring phones, how would you get one line to multiple
jacks? It seems that you might have to put the incoming line to one pair
of posts, then link them somehow to other posts and then connect a pair
of wires to those posts to run them to a jack.However, in observation, I
don't think that I have ever seen multiple wires connected to one post.
What am I missing?
Also, if I there is a large block in my office building, some of it in
use, some not, can I use some posts for my office, or do I have to get
another block specifically for my own use? If I can use it, how do I
determine what posts are "safe" to use?
Anyway, that's the start of my questions. I just want to get a basic
understanding of how these things work.
Thank you SO much!
Ryan |
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Dr. Anton T. Squeegee
Guest
|
| Posted:
Sat May 28, 2005 4:20 pm Post subject:
Re: Newbie question about punchdown blocks |
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|
In article <Xns9664270D4A939monsterearthlinknet@140.99.99.130>,
monster@earthlink.net says...
<snippety>
| Quote: | How do punchdown blocks work? To clarify, are certain posts wired to
other posts?
|
Your basic 66-block works, essentially, by insulation
displacement. When the wire is forced into the clip with the punch tool,
the edges of the clip bite through the insulation and grab on to the
wire. 110-series blocks do exactly the same thing, though their clips
are designed a little differently.
FWIW: Punch blocks don't work well with fine-gauge (24 or higher)
stranded wire. The stranded stuff doesn't offer as much physical
resistance to the pressure of the clip, so it ends up compressing such
wire more than biting through its insulation. This leads to
intermittents or opens.
Punch blocks work best with solid wire. Always have, always will.
As to your second question, yes: The clips are parallel across
rows in different patterns. The larger 66B4-25 blocks have six clips per
row, all connected in parallel across said rows, and can handle 25 pairs
(50 wires) each.
The 66M1-50's, aka 'split blocks,' have four clips per row. The
first clip on the left is in parallel across the row with its immediate
neighbor to the right, followed by an open split down the middle of the
block, and then the far-right clip is in parallel with its immediate
neighbor to the left.
This split configuration allows such a block to accomodate up to
50 pairs (100 wires).
There are other configurations of 66-blocks, most often found in
older 1A2 key telephone equipment, but the two I've mentioned are the
most common. If you're uncertain about what you're looking at, check the
part number of the block itself. It should be stamped into the side, or
perhaps on the front between the screw holes.
| Quote: | And, if you were wiring phones, how would you get one line to multiple
jacks? It seems that you might have to put the incoming line to one pair
of posts, then link them somehow to other posts and then connect a pair
of wires to those posts to run them to a jack.However, in observation, I
don't think that I have ever seen multiple wires connected to one post.
What am I missing?
|
You're correct in your observation. Punching more than one wire
into any clip is a recipe for certain disaster.
The way what you describe works is that each jack is, typically,
home-run to its own set of clips on a given block. You then have (on a
split block) one remaining set of clips to attach the line to. You would
simply loop the incoming pair in and out of the block, hitting all the
jack pairs you need to and leaving slack to manipulate the loops later
on.
If you have to have more than one set of wires in a given clip,
you can get stack-ons that provide additional clips.
| Quote: | Also, if I there is a large block in my office building, some of it in
use, some not, can I use some posts for my office, or do I have to get
another block specifically for my own use? If I can use it, how do I
determine what posts are "safe" to use?
|
It is best to install your own stuff. That way, whoever your phone
people are don't have to second-guess any modifications done to their
work.
| Quote: | Anyway, that's the start of my questions. I just want to get a basic
understanding of how these things work.
|
Are you also aware that there is a standardized color code for
telephone and telecomm wiring? You'd be surprised how many people don't
know that.
Happy tweaking.
--
Dr. Anton T. Squeegee, Director, Dutch Surrealist Plumbing Institute.
(Known to some as Bruce Lane, ARS KC7GR,
kyrrin (a/t) bluefeathertech[d=o=t]calm -- www.bluefeathertech.com
"If Salvador Dali had owned a computer, would it have been equipped
with surreal ports?" |
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Jgolan
Guest
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| Posted:
Sat May 28, 2005 4:20 pm Post subject:
Re: Newbie question about punchdown blocks |
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-------------------------------------
The Chairman wrote:
| Quote: | Hi all,
I am a newbie to the world of installation, and I really want to get a
good grasp on punchdown blocks. Is there a simple website or reference
that someone can point me to. After much googling I have come up empty,
If not, I have some basic questions that hopefully someone can answer:
How do punchdown blocks work? To clarify, are certain posts wired to
other posts?
|
Most blocks use an insulation displacement type pin for termination of the
conductors. Depending on the block style, some pins may be conductively
the same. The more common blocks used today are 66 sytle; 110 style, BIX
style and Krone style. Each have a unique punch down tool for terminating
conductors.
| Quote: | And, if you were wiring phones, how would you get one line to multiple
jacks? It seems that you might have to put the incoming line to one
pair
of posts, then link them somehow to other posts and then connect a pair
of wires to those posts to run them to a jack.However, in observation,
I
don't think that I have ever seen multiple wires connected to one post.
You are right, most block pins are designed to have only a single |
termination. One way to get a sigle line to multiple jacks is to use a
daisy chain connection where the conductor is not cut off at the pin but
extends to the next jack, etc., being cutoff at the last termination.
| Quote: | What am I missing?
Also, if I there is a large block in my office building, some of it in
use, some not, can I use some posts for my office, or do I have to get
another block specifically for my own use? If I can use it, how do I
determine what posts are "safe" to use?
|
This depends on how owns the block. If is owned by the service provider
then no.
| Quote: | Anyway, that's the start of my questions. I just want to get a basic
understanding of how these things work.
Thank you SO much!
|
Here is a link on 66 Blocks
http://www.siemon.com/int/download/installation_instructions/us/S66_Field-Terminated_M_Series_Blocks.pdf
and one on 110 blocks
http://www.siemon.com/int/download/installation_instructions/us/S110_Wiring_Blocks.pdf
##-----------------------------------------------#
Article posted with Cabling-Design.com Newsgroup Archiv
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The Chairman
Guest
|
| Posted:
Sun May 29, 2005 8:20 am Post subject:
Re: Newbie question about punchdown blocks |
|
|
Dr. Anton T. Squeegee <SpammersAreVermin@dev.null> wrote in
news:MPG.1d021dbe9e7e608198974b@localhost:
| Quote: | The way what you describe works is that each jack is, typically,
home-run to its own set of clips on a given block. You then have (on a
split block) one remaining set of clips to attach the line to. You
would simply loop the incoming pair in and out of the block, hitting
all the jack pairs you need to and leaving slack to manipulate the
loops later on.
|
Thank you both for your replies. Now, let me see if I have this
straight:
Let's say that I want to wire 4 phone jacks to one phone line. I have
the 66 style block. I'm going to call the columns of clips, from left to
right, 1...2...3...4. I'll call the rows, from top down, A...B...C...D
Tell me if this is right: I would take the incoming TelCo phone line,
run it to these clips:
A1 A3
B1 B3
C1 C3
D1 D3
using a single wire. I would accomplish this by using the side of the
punch down tool that doesn't cut, and wind the wire around the "fanning
clips", in and out of the block.
Then, I would punch down the wires to the individual jacks to:
A2 A4
B2 B4
C2 C4
D2 D4
This would take up all of the top 4 rows of clips total. Is this
correct? Or, would it be phone line to A1 B1 corresponds to jack in A2
B2, etc? OR, does A1 B1 correspond to A4 B4?
Now, what if I wanted to add a new home run jack to a line that has
already been cut and punched-down to the block, and therefore is only
accessible on one row of clips?
Thanks!
Ryan |
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Dr. Anton T. Squeegee
Guest
|
| Posted:
Sun May 29, 2005 4:20 pm Post subject:
Re: Newbie question about punchdown blocks |
|
|
In article <Xns9664DE8ABB291monsterearthlinknet@140.99.99.130>,
monster@earthlink.net says...
<snippety>
| Quote: | Thank you both for your replies. Now, let me see if I have this
straight:
Let's say that I want to wire 4 phone jacks to one phone line. I have
the 66 style block. I'm going to call the columns of clips, from left to
right, 1...2...3...4. I'll call the rows, from top down, A...B...C...D
|
<snippety-two>
WHICH 66-style block? The patterns on the 66B4-25 and 66M1-50 are
different.
Based on your stated pattern, and a description of what you're
trying to do, you can use either block. For a 66B4-25, you can run the
incoming line pair as follows.
TIP side to: A1, C1, E1, G1.
RING side to: B1, D1, F1, H1.
You could then place the pairs from the jacks as follows:
TIP side (from each jack): A2, C2, E2, G2.
RING side (from each jack): B2, D2, F2, H2.
You could actually use this same pattern on the left split side of
a 66M1-50 as well, but reversed for the same of neatness. By
'reversed,' I mean punch down the home-run cables from each jack first,
THEN run in your looped feed from the telco side.
| Quote: | Now, what if I wanted to add a new home run jack to a line that has
already been cut and punched-down to the block, and therefore is only
accessible on one row of clips?
|
If that jack is not currently used, it should have one clip per
terminal (tip and ring) that is unused. You should not have any problems
making it live.
This is, unfortunately, one of the hardest things to demonstrate
to someone over the 'net. Tell you what, though... If you want, I can
take some photos of my key system installation (it uses both types of
blocks) and E-mail them to you. That way, you'd at least see how the
wiring's done.
Let me know.
Happy punching.
--
Dr. Anton T. Squeegee, Director, Dutch Surrealist Plumbing Institute.
(Known to some as Bruce Lane, ARS KC7GR,
kyrrin (a/t) bluefeathertech[d=o=t]calm -- www.bluefeathertech.com
"If Salvador Dali had owned a computer, would it have been equipped
with surreal ports?" |
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Jgolan
Guest
|
| Posted:
Sun May 29, 2005 4:20 pm Post subject:
Re: Newbie question about punchdown blocks |
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Well, not really....using your legend
1st all your station cable pairs should be terminated, assuming you are
using 4-pair cable follow this pattern
wh/bl - A4
Bl/Wh - B4
Wh/Or - C4
Or/Wh - D4
Wh/Gn - E4
Gn/Wh - F4
Wh/Bn - G4
Bn/Wh - H4
2nd cable starts on I4 etc.
Bring in your telco line into pins A1 & B1 and loop them (daisy chain) to
C1 & D1, then E1 & F1, etc for about 10 appearences (this will give your 6
spares for future adds)
Last, take 1 pair (scrap) from A2 & B2 to A3 & B3, this assumes that the
Bl/Wh pair of your station cable is cut down on the jack as pair 1. For
the second station, take 1 pair from C2 & D2 to I3 & J3. Continue this
pattern for all your stations.
By doing this way you can individually disconnect any one station without
affecting the others for troubleshooting.
-------------------------------------
The Chairman wrote:
| Quote: | Dr. Anton T. Squeegee <SpammersAreVermin@dev.null> wrote in
news:MPG.1d021dbe9e7e608198974b@localhost:
The way what you describe works is that each jack is,
typically,
home-run to its own set of clips on a given block. You then have
(on a
split block) one remaining set of clips to attach the line to. You
would simply loop the incoming pair in and out of the block,
hitting
all the jack pairs you need to and leaving slack to manipulate the
loops later on.
Thank you both for your replies. Now, let me see if I have this
straight:
Let's say that I want to wire 4 phone jacks to one phone line. I have
the 66 style block. I'm going to call the columns of clips, from left
to
right, 1...2...3...4. I'll call the rows, from top down, A...B...C...D
Tell me if this is right: I would take the incoming TelCo phone line,
run it to these clips:
A1 A3
B1 B3
C1 C3
D1 D3
using a single wire. I would accomplish this by using the side of the
punch down tool that doesn't cut, and wind the wire around the
"fanning
clips", in and out of the block.
Then, I would punch down the wires to the individual jacks to:
A2 A4
B2 B4
C2 C4
D2 D4
|
| Quote: | This would take up all of the top 4 rows of clips total. Is this
correct? Or, would it be phone line to A1 B1 corresponds to jack in A2
B2, etc? OR, does A1 B1 correspond to A4 B4?
Now, what if I wanted to add a new home run jack to a line that has
already been cut and punched-down to the block, and therefore is only
accessible on one row of clips?
Thanks!
Ryan
|
##-----------------------------------------------#
Article posted with Cabling-Design.com Newsgroup Archiv
http://www.cabling-design.com/forum
no-spam read and post WWW interface to your favorite newsgroup -
comp.dcom.cabling - 2028 messages and counting
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Watson A.Name - \"Watt Su
Guest
|
| Posted:
Sun May 29, 2005 11:00 pm Post subject:
Re: Newbie question about punchdown blocks |
|
|
"The Chairman" <monster@earthlink.net> wrote in message
news:Xns9664270D4A939monsterearthlinknet@140.99.99.130...
| Quote: | Hi all,
I am a newbie to the world of installation, and I really want to get a
good grasp on punchdown blocks. Is there a simple website or reference
that someone can point me to. After much googling I have come up
empty,
If not, I have some basic questions that hopefully someone can answer:
How do punchdown blocks work? To clarify, are certain posts wired to
other posts?
|
If you do as has already been done, like 'monkey see, monkey do' then
you will learn the how and why of the system.
| Quote: | And, if you were wiring phones, how would you get one line to multiple
jacks? It seems that you might have to put the incoming line to one
pair
of posts, then link them somehow to other posts and then connect a
pair
of wires to those posts to run them to a jack.However, in observation,
I
don't think that I have ever seen multiple wires connected to one
post.
What am I missing?
|
You're missing out on the other end of the punchdown tool blade, the one
that has no cutter. This allows you to punch down the wires and loop
them to the next pair of contacts down. Called daisychaining.
| Quote: | Also, if I there is a large block in my office building, some of it in
use, some not, can I use some posts for my office, or do I have to get
another block specifically for my own use? If I can use it, how do I
determine what posts are "safe" to use?
|
For a newbie, I would suggest you keep your mess to yourself and start
your experimenting on another block just for your own use. If a telco
tech saw your mess on their blocks, they might just take offense and
remove it. :-P
| Quote: | Anyway, that's the start of my questions. I just want to get a basic
understanding of how these things work.
Thank you SO much!
Ryan |
|
|
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|
|
The Chairman
Guest
|
| Posted:
Mon May 30, 2005 12:20 am Post subject:
Re: Newbie question about punchdown blocks |
|
|
"Watson A.Name - \"Watt Sun, the Dark Remover\"" <NOSPAM@dslextreme.com>
wrote in news:119k0nqkppoln05@corp.supernews.com:
| Quote: | If you do as has already been done, like 'monkey see, monkey do' then
you will learn the how and why of the system.
|
Yeah, I tried my best to figure it from looking, but the wires were too
hard to follow, looping in and out, going behind, etc. |
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The Chairman
Guest
|
| Posted:
Mon May 30, 2005 12:20 am Post subject:
Re: Newbie question about punchdown blocks |
|
|
Dr. Anton T. Squeegee <SpammersAreVermin@dev.null> wrote in
news:MPG.1d03880862825a2598974e@localhost:
| Quote: | Tell you what, though... If you want, I can
take some photos of my key system installation (it uses both types of
blocks) and E-mail them to you. That way, you'd at least see how the
wiring's done.
|
That would be fantastic! My e-mail is monster@earthlink.net. Thanks! |
|
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