Newbie question about punchdown blocks
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Posted by Jgolan on May 29, 2005, 5:19 pm
Please log in for more thread options 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: > 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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Posted by Jgolan on May 28, 2005, 3:31 pm
Please log in for more thread options ------------------------------------- The Chairman wrote: > 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. > 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,
You are right, most block pins are designed to have only a single
> I > don't think that I have ever seen multiple wires connected to one post. 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. > 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. > 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 > Ryan
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Posted by Watson A.Name - \"Watt Sun, th on May 29, 2005, 2:00 pm
Please log in for more thread options
> Hi all,
empty,
> > 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 >
> 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. > And, if you were wiring phones, how would you get one line to multiple
pair
> jacks? It seems that you might have to put the incoming line to one > 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. > 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 > 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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Posted by The Chairman on May 29, 2005, 10:57 pm
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> 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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>> 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.