Anybody here work with fiber?
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Hi Gang, I know copper, I don't know fiber.... If anybody has worked with fiber before.... We have 2 buildings about 800-900 feet apart. Between our two buildings is the county public libary under a major renovation. Lucky for us... Their contractor is talking about putting in a 1" conduit tube for our use between the two buildings. One of the first things we talked about as to put fiber in this conduit. Now comes the problem. I know about a penny's worth of fiber information. Can somebody help me out? Our goals: Get rid of our 2 t-1 lines currently in use. Maybe not immediately, but very soon after this line goes in. Be able to do voice between our 2 pbx units right now. (Bigger question is can the PBX units handle fiber). From Google: There are 2 types of fiber, multi-mode, single mode. The only difference I've been able to figure out is that single mode is for much longer runs. Other than that, which one do I need? (Figure 1000' point-to-point).. Looks like we'll need PVC coated as this cable will be run in conduit tubing. How many fibers should I look at? I know the answer is multiple pairs, but what? 3 pair? 6Pair? Once it gets in the buildings, we're ok. I can have somebody come in and terminate the fiber for me and then I'll convert it back to our existing copper. Thanks everybody for en"light"ening me. Nick This are my own opinions. You know the rest.....
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Hi Gang, I know copper, I don't know fiber.... If anybody has worked with fiber before.... We have 2 buildings about 800-900 feet apart. Between our two buildings is the county public libary under a major renovation. Lucky for us... Their contractor is talking about putting in a 1" conduit tube for our use between the two buildings. One of the first things we talked about as to put fiber in this conduit. Now comes the problem. I know about a penny's worth of fiber information. Can somebody help me out? Our goals: Get rid of our 2 t-1 lines currently in use. Maybe not immediately, but very soon after this line goes in. Be able to do voice between our 2 pbx units right now. (Bigger question is can the PBX units handle fiber). From Google: There are 2 types of fiber, multi-mode, single mode. The only difference I've been able to figure out is that single mode is for much longer runs. Other than that, which one do I need? (Figure 1000' point-to-point).. Looks like we'll need PVC coated as this cable will be run in conduit tubing. How many fibers should I look at? I know the answer is multiple pairs, but what? 3 pair? 6Pair? Once it gets in the buildings, we're ok. I can have somebody come in and terminate the fiber for me and then I'll convert it back to our existing copper. Thanks everybody for en"light"ening me. Nick This are my own opinions. You know the rest.....
All decent installation use single mode (its all about dispersion rate). Pay attention to the armouring on the cable unless the people drawing the cable through will pay for damaged cable ! The data rate/length tradeoff is where fibres vary, so check thatfor your specs. Elaine :rose: The tigress is here :-D
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Hi Gang, I know copper, I don't know fiber.... If anybody has worked with fiber before.... We have 2 buildings about 800-900 feet apart. Between our two buildings is the county public libary under a major renovation. Lucky for us... Their contractor is talking about putting in a 1" conduit tube for our use between the two buildings. One of the first things we talked about as to put fiber in this conduit. Now comes the problem. I know about a penny's worth of fiber information. Can somebody help me out? Our goals: Get rid of our 2 t-1 lines currently in use. Maybe not immediately, but very soon after this line goes in. Be able to do voice between our 2 pbx units right now. (Bigger question is can the PBX units handle fiber). From Google: There are 2 types of fiber, multi-mode, single mode. The only difference I've been able to figure out is that single mode is for much longer runs. Other than that, which one do I need? (Figure 1000' point-to-point).. Looks like we'll need PVC coated as this cable will be run in conduit tubing. How many fibers should I look at? I know the answer is multiple pairs, but what? 3 pair? 6Pair? Once it gets in the buildings, we're ok. I can have somebody come in and terminate the fiber for me and then I'll convert it back to our existing copper. Thanks everybody for en"light"ening me. Nick This are my own opinions. You know the rest.....
no, but fibers do really good work for me ... :sigh: :suss: :-D
Maximilien Lincourt Your Head A Splode - Strong Bad
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Hi Gang, I know copper, I don't know fiber.... If anybody has worked with fiber before.... We have 2 buildings about 800-900 feet apart. Between our two buildings is the county public libary under a major renovation. Lucky for us... Their contractor is talking about putting in a 1" conduit tube for our use between the two buildings. One of the first things we talked about as to put fiber in this conduit. Now comes the problem. I know about a penny's worth of fiber information. Can somebody help me out? Our goals: Get rid of our 2 t-1 lines currently in use. Maybe not immediately, but very soon after this line goes in. Be able to do voice between our 2 pbx units right now. (Bigger question is can the PBX units handle fiber). From Google: There are 2 types of fiber, multi-mode, single mode. The only difference I've been able to figure out is that single mode is for much longer runs. Other than that, which one do I need? (Figure 1000' point-to-point).. Looks like we'll need PVC coated as this cable will be run in conduit tubing. How many fibers should I look at? I know the answer is multiple pairs, but what? 3 pair? 6Pair? Once it gets in the buildings, we're ok. I can have somebody come in and terminate the fiber for me and then I'll convert it back to our existing copper. Thanks everybody for en"light"ening me. Nick This are my own opinions. You know the rest.....
Nick Jacobs wrote: Can somebody help me out? I Will Try... Nick Jacobs wrote: There are 2 types of fiber, multi-mode, single mode. The only difference I've been able to figure out is that single mode is for much longer runs. Other than that, which one do I need? (Figure 1000' point-to-point).. It has more to do with the type of power. For really long runs, you would want 1000 Base FX (Real Laser Light). The signal degrades less over long halls. For a 1000 foot straight run you may be able to get away with SX (Simulated Laser Light). Nick Jacobs wrote: Looks like we'll need PVC coated as this cable will be run in conduit tubing. More than likely the installer will put a conduit lining in the conduit first (Interduct). If the run will go from inside to outside to inside, the run will need to be transitioned between non-plenum to plenum to non-plenum. (Depending on your local bldg codes). Nick Jacobs wrote: How many fibers should I look at? I know the answer is multiple pairs, but what? 3 pair? 6Pair? You should run at least 4 to 6 pair. I'd personally go with 12 pair. Just for redunancy, and expandability. Also, you might suggest that the installer put a string in the conduit should you ever need another run cable run. :) Nick Jacobs wrote: Once it gets in the buildings, we're ok. I can have somebody come in and terminate the fiber for me and then I'll convert it back to our existing copper. I'd have a professional do it. The tensil strength of fiber cable varies depending on its shielding, and covering. Plus if you do have to transition it, you'll be better off getting it professionally spliced in, and terminated. Nick Jacobs wrote: (Bigger question is can the PBX units handle fiber). If you use VOIP (Voice of IP) you can transition your NBX into your PBX for incoming calls. All other internal calls would go through the NBX between the two bldgs. No toll charges. :) Other than that, I'm sure your PBX will not accept a fiber input. Since I'm not a telephone installer, don't take my word for that. Good luck! Frank "Keyboard Error - Press F1 to Continue"
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Hi Gang, I know copper, I don't know fiber.... If anybody has worked with fiber before.... We have 2 buildings about 800-900 feet apart. Between our two buildings is the county public libary under a major renovation. Lucky for us... Their contractor is talking about putting in a 1" conduit tube for our use between the two buildings. One of the first things we talked about as to put fiber in this conduit. Now comes the problem. I know about a penny's worth of fiber information. Can somebody help me out? Our goals: Get rid of our 2 t-1 lines currently in use. Maybe not immediately, but very soon after this line goes in. Be able to do voice between our 2 pbx units right now. (Bigger question is can the PBX units handle fiber). From Google: There are 2 types of fiber, multi-mode, single mode. The only difference I've been able to figure out is that single mode is for much longer runs. Other than that, which one do I need? (Figure 1000' point-to-point).. Looks like we'll need PVC coated as this cable will be run in conduit tubing. How many fibers should I look at? I know the answer is multiple pairs, but what? 3 pair? 6Pair? Once it gets in the buildings, we're ok. I can have somebody come in and terminate the fiber for me and then I'll convert it back to our existing copper. Thanks everybody for en"light"ening me. Nick This are my own opinions. You know the rest.....
Hello, I worked with fiber for years as a contractor. I will be glad to help answer your questions. 1st. There are 2 main type. Single mode and multi mode. Multi mode does not have the bandwith capabilities of single mode. However, I have run gigabit ethernet over multimode. The end user equipment that you choose that will dictate what mode you will use. The term mode simply refers to the "Paths" that light takes when traveling through the fiber optic cable. Multimode has multiple paths for fiber to take. Because of this, the light arrives at different times. This time lags causes the limited bandwith. Think of Fiber optics as a window. Piture a window that exists from one point to another. Since a window is glass, you can see all the way through it. But we don't need all that glass to get a very narrow light beam through it. So we take a very small circle of it. 9 microns for single mode. 50 to 65 microns for multimode. and put a teflon jacket on it. So a fiber optic cable is just a window for light to pass through from one point to another. In terms of replacing t1's, yes that is done all the time. It can be done with stand alone equipment, or some pbx's have it built in to them. Other pbx's such as comdial have special cards for fiber to tie units together, as well as IP cards, so you can hook your fiber to gigabit switches and your switches to you pbx ip port. It all depends upon your pbx and it's features. I know Comdial will do what you want. as for the fiber. It comes typically in units of 6 or 12. Single mode is often up to 3 times the cost. In addition you will need "LIU'S" Light interface units. These act as a patch panel for fiber cable. The Eia/Tia specs call for SC style connectors. ST connectors are used for grandfathering old systems. you can see these connectors and more at http://www.panduit.com/products/browse.asp?newrecordset=yes&classlevel=16 Your equipment will dictate which you will use. As well as for your fiber patch cords. take a free basic course on fiber online at: http://www.panduit.com/training/index.asp 3 pair and 6 pair are typical. If your budget can handle it go 6 pair. You can always leave some of the fibers "dark" (unterminated) to save money for now. you can always "lite them up" later. If you run your fiber in underground conduit, it should be rated for underground and gell filled. If water gets into the cable and it freezes, it will crack the fibers, i.e. the need for gel. If you use gel filled cable. Keep in mind that code requires th
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Hi Gang, I know copper, I don't know fiber.... If anybody has worked with fiber before.... We have 2 buildings about 800-900 feet apart. Between our two buildings is the county public libary under a major renovation. Lucky for us... Their contractor is talking about putting in a 1" conduit tube for our use between the two buildings. One of the first things we talked about as to put fiber in this conduit. Now comes the problem. I know about a penny's worth of fiber information. Can somebody help me out? Our goals: Get rid of our 2 t-1 lines currently in use. Maybe not immediately, but very soon after this line goes in. Be able to do voice between our 2 pbx units right now. (Bigger question is can the PBX units handle fiber). From Google: There are 2 types of fiber, multi-mode, single mode. The only difference I've been able to figure out is that single mode is for much longer runs. Other than that, which one do I need? (Figure 1000' point-to-point).. Looks like we'll need PVC coated as this cable will be run in conduit tubing. How many fibers should I look at? I know the answer is multiple pairs, but what? 3 pair? 6Pair? Once it gets in the buildings, we're ok. I can have somebody come in and terminate the fiber for me and then I'll convert it back to our existing copper. Thanks everybody for en"light"ening me. Nick This are my own opinions. You know the rest.....
This is exactly why the universe produced computer network engineers. You must surely be joking if your thinking of winging this yourself when for a small fee you could get expert up to date advice from a geniune network engineer rather than opinions from the "alligator pit" here? (I used to be a genuine certified network engineer and I *have* worked with fiber in the past and my advice if I were to give it would probably be worthless since it was more than 4 years ago that I last worked with it.)
SPCA--we're here to inquire about the health of Dr. Schroedinger's cat -
This is exactly why the universe produced computer network engineers. You must surely be joking if your thinking of winging this yourself when for a small fee you could get expert up to date advice from a geniune network engineer rather than opinions from the "alligator pit" here? (I used to be a genuine certified network engineer and I *have* worked with fiber in the past and my advice if I were to give it would probably be worthless since it was more than 4 years ago that I last worked with it.)
SPCA--we're here to inquire about the health of Dr. Schroedinger's catEasy there bud. Small fee in some parts of the country can be big $$ in others. Besides, One should always do a little bit of background research before asking the "Experts". Otherwise, how do you know you are getting the correct type of stuff? I have seen many an engineer propose stuff that is good, correct, for what we need, but I've also see as many propose stuff that was way overkill for what we needed. Withouth having some knowledge about the subject, I would probably end up getting ripped off. All I need to know about is the hop between buildings. If we COULD do it with anything other than fiber, I WOULD do it all myself. I know all about twisted pair, wireless, coax, token ring, etc. I just don't know about fiber. Nick John Cardinal wrote: This is exactly why the universe produced computer network engineers. You must surely be joking if your thinking of winging this yourself when for a small fee you could get expert up to date advice from a geniune network engineer rather than opinions from the "alligator pit" here? (I used to be a genuine certified network engineer and I *have* worked with fiber in the past and my advice if I were to give it would probably be worthless since it was more than 4 years ago that I last worked with it.) This are my own opinions. You know the rest.....
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Easy there bud. Small fee in some parts of the country can be big $$ in others. Besides, One should always do a little bit of background research before asking the "Experts". Otherwise, how do you know you are getting the correct type of stuff? I have seen many an engineer propose stuff that is good, correct, for what we need, but I've also see as many propose stuff that was way overkill for what we needed. Withouth having some knowledge about the subject, I would probably end up getting ripped off. All I need to know about is the hop between buildings. If we COULD do it with anything other than fiber, I WOULD do it all myself. I know all about twisted pair, wireless, coax, token ring, etc. I just don't know about fiber. Nick John Cardinal wrote: This is exactly why the universe produced computer network engineers. You must surely be joking if your thinking of winging this yourself when for a small fee you could get expert up to date advice from a geniune network engineer rather than opinions from the "alligator pit" here? (I used to be a genuine certified network engineer and I *have* worked with fiber in the past and my advice if I were to give it would probably be worthless since it was more than 4 years ago that I last worked with it.) This are my own opinions. You know the rest.....
Nick Jacobs wrote: One should always do a little bit of background research before asking the "Experts". Sure I agree, research is good as long as it's from a valid source. Sorry, nothing intended personally :) , I just have a "thing" about the "do you guys know anything about..." posts here when there is a whole internet full of information from experts in the field. When you get knowledge from less than reliable places, then ask qualified engineers things like "some guy on the internet said I should do this, what do you think...?" it doesn't help your cause any. Asking programmers about fiber cabling makes about as much sense as posting the same question on the dog fanciers newsgroup. ;) Sure you might happen to get an engineer or two as you did here, but as you can tell from at least one persons answers there is a *hell* of a lot to consider, it's not like pulling a copper cable through a hole in the wall and even that is much more complex (10BaseT) and error prone than most people think. The time honored traditional way that really works to get this information fast, cheaply and reliably is to ask several reputable firms in your area to quote on the job and provide detailed analysis. Then you take all that info in, ask a lot of questions *after* reading it of each of the firms. In a case like this they would probably come up with some things you couldn't determine any other way because they will physically examine the situation onsite. For some it's finger nails on a chalkboard, for me it's certain posts here on C.P. nothing personal. :-D
SPCA--we're here to inquire about the health of Dr. Schroedinger's cat