Selected ISP Support > Earthlink DSL > [Speed Problem] Regular Drops in Speed or Loss of Connection

reply to retiredcop96

Re: [Speed Problem] Regular Drops in Speed or Loss of Connection

Okay, it's bought and paid for.

I have basic how to do it skills but like learning some of the principles just to understand how things tick, so to speak. Could one of you give me a quick explanation as to what the various wire categories mean and how the gauge of the wire fits into the whole picture?

Much obliged.

Gerry

Gerry, the specifications of these cables are targeted at performance WAY beyond DSL frequencies. Basically, DSL will see virtually no difference between CAT3 and CAT6.

DSL operates to 1MHz.
CAT3 is rated to 16MHz, 16 times DSL.
CAT6 is rated to 250MHz, 250 times DSL.

They are all solid 24AWG unshielded twisted pairs (UTP).

These "Category" cables are targeted at networking and relatively recent (decades). Someone from the phone company can verify but they use their own cable specifications which to a greater extent specifies lifetime under various weathering conditions. In their own evolution, the phone company has used both 24AWG and 26AWG (26 is smaller) wire so you'll see charts regarding DSL as a result of this.

Yes, 26AWG wire has more copper loss (electrical resistance absorbing power) as well as a generally smaller distance between the wires raising capacitance per foot. Both these makes 26AWG worse at higher DSL frequencies. It cannot run as long a length. Most people have no idea what the phone company uses in their particular area, but a phone tech may be able to tell you.

I haven't read the specs but I don't think you want to run ANY CAT cable outside for a long run. It's amazing what rain, sunlight and wind will do to it in just a few years.

You'll also run into "plenum" cable that's very expensive. Unless you're a business in Chicago and have to be inspected for fire safety, don't go there.

In a nutshell, all these cables are *TWISTED PAIR*. That's a key. Twisting causes both wires to receive identical noise so they "balance" and noise can be canceled out of them. Much older house wiring is NOT twisted (or controlled for other things) and makes a huge difference for DSL by becoming noise antennas. This is the core of house wiring problems for DSL.

Thanks very much Bill. As I mentioned I lucked out with where we finally settled on our computer location. I'll have well under a 50' run of wire(depending on how fancy I get)from the splitter to the the indoor connection plate(yes, I know, not exactly a technical term). The only problem will be working my way around all the "valuable junk" that has been accumulating in the garage in anticipation of a planned spring time garage sale (or a large load to Goodwill if it doesn't sell). IRC, Home Depot has 50' rolls of both CAT3 and CAT5.

This will beat the heck out of my other project on hold; laying down a laminate floor through about half the house. Of course before the floor, comes the painting and before that, moving furniture. But, I'm going to break it down to smaller chunks and it should be less daunting. Funny how easy these things seemed to be to accomplish 20 years ago.

Thanks for all the advice and explanations. This should be one of the easier home improvement chores I have to tackle.

Take care;

Gerry

Hello;

Well, my new $12.00 Siecor Outdoor POTS Splitter arrived today. I have one of the new NIDs but I'm getting a little confused trying to figure out which is right set of the various installation pictures, from Bill's previously posted link (»EarthLink DSL FAQ »Can I see an example of a splitter install?)to use, if any.

Thanks again.

Gerry

Gerry, I see the first link has broken images. Do the others look like your NID?

Some thoughts...

NIDs always have a customer and telco side. The telco side usually needs a special tool to get into.

My NID customer side is on the left and has 4 line positions. Ones pictured are the opposite.

Find the telephone line feeding the house. Follow it back to the NID terminals. This line and those terminals is where all the work is done.

The splitter ends up inserted in this line - NID to splitter "NETWORK" and house to splitter "VOICE". The remaining "DATA" feeds your DSL homerun line.

I hope your splitter uses those names for the terminals. If not, what are they?

I've seen telco-side splitter installs but that's really not proper convention.

I put my splitter immediately inside the house, rather than outside.

See the little plug/jack in the NID associated with the line you're dealing with? When you unplug this, you're holding the house feed in your hand and the jack looking at you is the feed from the telephone line. This is the jack where a NID test is done while the house is disconnected. I hope this makes sense. Unplug while you work on the customer terminals - the line will be dead when you unplug.

Did I help or hurt the confusion?

Believe it or not, once I went outside and opened the NID, it all made sense. Once I get the wire, move some the the accumulated cr*p out of the way, it should go very smoothly.

Thanks for the help once again.

Gerry

Hello All;

Well, before I could install the splitter, I began having more problems getting connected at all. The little green DSL signal led on the ZyXEL modem kept going off for a period of time then on, then off, well you get the picture. I contacted Earthlink support during a period where I was able to connect and the support person issued a "Expedited" request for assistance. In my case, the local vendor is Covad. I asked for a face to face meeting to discuss my situation which, which not the smoothest, was still fairly reliable up until about 2 months ago. As of today, I am unable to get a DSL connection at all. I disconnected every device on this phone line just to make sure a filter or something else might be causing this sudden change from an unreliable connection to none at all. Obviously, that was not the cause. I also connected the ZyXEL modem at the NID using my laptop without getting any DSL signal at all. I am fairly certain I properly reset it from bridge to pppoe mode before trying to connect as it seemed the logical thing to do since I wasn't going through my Linksys router. I did set it back to bridge after my fruitless test.

I feel 24 hours should be sufficient to get some type of response back to my request for tech support, even if it is to say "we're trying to track down the problem" or am I expecting too much from Earthlink?

When I contact tech support next, either in face to face or on the phone, are there any particular questions I should ask so I don't get the ole "Shuffle Off To Buffalo" run-around? Could this be as simple a problem as having a failing modem?

Anyway, I wrote support, via dial-up and if I don't have any response by around noon tomorrow, I'll try phone support when I'll be able to devote the time. I'll also be in a better frame of mind.

Thanks for listening, all your advice and assistance.

Gerry

reply to retiredcop96
Gerry,

Doc's idea is a good one. Those Covad guys have been very helpful to me in the past.

It's uncertain if something else happened to your line. The NID test, with house wiring disconnected, should represent the best you can do. I just hope you're not being fooled by a bad cable or DSL has been removed from the line during this process.

Let us know how it goes.

The following morning, my connection was back up and running. Thus far, no broken connections and while the download speed is now averaging between 1.0 and 1.2 Mbps, it has been very consistent. Once the rain stops and I get the splitter installed, I'll see how things run for a bit before contacting Covad direct per Doc's suggestion.

Again, I appreciate your patience and all your assistance.

Gerry