Reviews:
 ·Comcast Business..
 ·AT&T Midwest
| Question about extending a DSL line I've had some really bad experiences lately with my company and having to extend phone lines from one room to another for our DSL circuits.
The scenario is that we have monitoring equipment setup in mechanical rooms within buildings and venus for our wireless systems. In general these rooms are not wired for phone at all. So we have to get a DSL circuit there so that we can connect our equipment to the internet. The problem is that in most cases the main telco room is pretty far away, and re-locating our equipment is not an option.
So what i've done in a couple of these cases is have a CAT5 cable pulled from the POP to the mechanical room where our equipment is. Usuall this seems to work for a day or so and then we start to have problems. Some of these runs are over 500ft.
So my questions are:
1. What is the maximum distance you can extend a DSL circuit from the punch block?
2. What type of wire should be used in this case?
3. Is there any kind of repeater or extender that could be put in place to bump up the signal across the run? |
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 wayjacPremium,MVM
join:2001-12-22
Indy
kudos:1 | Can you use ethernet to/from the telco room instead of moving the dsl signal from cable |
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Reviews:
·Comcast Business..
·AT&T Midwest
| The problem with just extending the Ethernet is that the maximum langth is 300 ft, and we are not allowed to keep our modem in the POP. Ideally we want to have all of our equipment located in the same room. It's much easier to troubleshoot when it's all right there. |
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 DaMaGeINCThe Lan ManPremium
join:2002-06-08
Greenville, SC
kudos:2 | reply to cmslick3
DSL circut in the telco room, shorter the run the better, then run fiber to the mechanical room and convert it to ethernet and be done with it...
--
They love you, comfort you, use you, fuck you, and leave you. Such is life. |
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wayjacPremium,MVM
join:2001-12-22
Indy
kudos:1 | reply to cmslick3
said by cmslick3:The problem with just extending the Ethernet is that the maximum langth is 300 ft Add a ethernet switch every 200ft |
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DaMaGeINCThe Lan ManPremium
join:2002-06-08
Greenville, SC
kudos:2 | said by wayjac:said by cmslick3:The problem with just extending the Ethernet is that the maximum langth is 300 ft Add a ethernet switch every 200ft
Why do all of that??? More points of failure.
--
They love you, comfort you, use you, fuck you, and leave you. Such is life. |
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 tschmidtPremium,MVM
join:2000-11-12
Milford, NH
kudos:5
·Fairpoint Commun..
 ·Hollis Hosting
| reply to cmslick3
1) Total DSL circuit length needs to be under 18,000 feet. The extension just adds to the total circuit length. The extra 500 feet only matters if the extra length winds up requiring a lower speed.
2) Cat 3 or Cat 5 is fine. You want to use twisted pair cable and keep it away from power feeds.
3) No.
If your DSL circuit is so marginal that an extra 500 feet degrades speed install the modem in the communication closet. In that case the Ethernet run will be longer then 100 meters (326 feet) so you either need to use fiber, put an Ethernet switch in the middle to regenerate the signal or use special long haul Ethernet drivers.
Unless the equipment room has a terrible environment the modem does not care.
/tom |
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| reply to cmslick3
said by cmslick3:So what i've done in a couple of these cases is have a CAT5 cable pulled from the POP to the mechanical room where our equipment is. Usuall this seems to work for a day or so and then we start to have problems. Some of these runs are over 500ft. Cat5/5e/6 limit is 100M (~328ft). How your runs even work I'm at a loss to explain.
And second tschmidt's answers to your questions.
You may want to get with a certified cable contractor, building manager and / or the
phone company to get a real solution in place. Sounds like you're adding a hack ontop
of a hack ontop of a hack, which just leads to one big headache eventually.
Regards |
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 shdesignsPowered By Infinite Improbabilty DrivePremium
join:2000-12-01
Stone Mountain, GA
·Atlantic Nexus
| said by HELLFIRE:Cat5/5e/6 limit is 100M (~328ft). How your runs even work I'm at a loss to explain.
Cat5/5e/6 has no distance limitation.
You are confusing it with an Ethernet spec; this is not Ethernet.
--
Scott Henion
Embedded Systems Consultant,
SHDesigns home - DIY Welder |
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Reviews:
·Comcast Business..
·AT&T Midwest
| We were able to make one building work by installing the modem in the phone room with a 1Gb switch at each end of the 600ft CAT6. This was able to extend the ethernet signal far enough to make the connection stable.
However this is not the prefered or truly correct way to go about getting service to our equipment.
I have brought this up to our construction folks and they are pushing back on me to find a technical solution. I'm just not sure what that is. Fiber is an option I guess since we are already pulling fiber through the building, however having eqipment in the POP room isn't prefered.
There has to be a simple way to extend the phone and DSL over copper several hundred feet inside a building. |
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hardlyPremium
join:2004-02-10
USA | reply to tschmidt
said by tschmidt:1) Total DSL circuit length needs to be under 18,000 feet. The extension just adds to the total circuit length. The extra 500 feet only matters if the extra length winds up requiring a lower speed.
2) Cat 3 or Cat 5 is fine. You want to use twisted pair cable and keep it away from power feeds.
3) No.
If your DSL circuit is so marginal that an extra 500 feet degrades speed install the modem in the communication closet. In that case the Ethernet run will be longer then 100 meters (326 feet) so you either need to use fiber, put an Ethernet switch in the middle to regenerate the signal or use special long haul Ethernet drivers.
Unless the equipment room has a terrible environment the modem does not care.
/tom
+1 |
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| reply to cmslick3
If you're getting pushback like that, my advice cmslick3 is to get everyone
together into a meeting room, lay out the problem and say "WE need
to fix it and I need YOUR help to come up with a solution."
Doesn't blame anyone, doesn't put the onus on anyone, and lets everyone
bring their bit to the table.
Just my 00000010 bits.
Regards |
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tschmidtPremium,MVM
join:2000-11-12
Milford, NH
kudos:5 Reviews:
·Fairpoint Commun..
·Hollis Hosting
| reply to cmslick3
said by cmslick3:There has to be a simple way to extend the phone and DSL over copper several hundred feet inside a building. Yes, just extend the phone line. What is the total length of the circuit if you do that and what speed DSL do you want? That will determine if it is too much. If so you can always get multiple circuits and load balance to increase effective speed.
That is your only option since you do not want to use active electronics in the wiring closet.
/tom |
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AsherN
join:2010-08-23
Thornhill, ON | reply to shdesigns
said by shdesigns:said by HELLFIRE:Cat5/5e/6 limit is 100M (~328ft). How your runs even work I'm at a loss to explain.
Cat5/5e/6 has no distance limitation. You are confusing it with an Ethernet spec; this is not Ethernet. We have a winner. The line prior to the modem is POTS. As long as the distance from the CO to the modem is under 18,000 feet you're OK. |
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cramer
join:2007-04-10
Raleigh, NC
kudos:5 Reviews:
·AT&T Southeast
| reply to cmslick3
Actually, the limit is "205m NODE to NODE". However, those are 1970's era numbers  Today's $5 NIC cannot drive 50m. And since the same cheap crap is used in most common "hubs", a cheap switch isn't likely to improve the reach. Fiber or long-range ethernet repeaters are the only real option. (some even use multi-pair HDSL and can span several miles.) |
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