This is from dictation. There are some errors I did not catch when proff reading.
Let me offer some suggestions. I have been using DSL for many years. I have also had cable modem and at one time, wideband wireless.
The best service I ever had was through the cable modem. But the price is just outside of my comfort zone, so I had to go back to using DSL.
Oftentimes, I have had to call the phone company and complain about my DSL service. A few times. They suggested it might be my indoor wiring. I am quite sure it is not my indoor wiring, although at one time I was going to believe that. Here is why I say that. At one time I had my DSL modem mounted on the back porch, which is also our laundry room. It is a fully enclosed area and has a reliable AC outlet. The phone wires for the house also passed by that area. So if one time I made a connection to the phone wires and passed it through the wall into my house. I haven't the modem directly connected up to the outside line. At that point, and I had a filter that would then seem the rest of the telephone system inside the house. Also, I had a chat plug on bug the house, telephones. So, this was enough to verify that the house wiring was not interfering with the DSL connection. A common problem is when many wires might have been spliced onto a home telephone system, and you have a wire going somewhere and you forgot about it. In some cases, an extra spliced hooked onto the telephone wiring may interfere with proper operation of the modem. But this is usually a problem only if the wiring is very extensive. But in my case, I am living in a small modular home and know the wiring is not very extensive. Anyway.
So what I'm getting at is that I made arrangements with the wiring myself so I could disable the rest of the house and see what performance increase. I can get. none. After using that arrangement for a long period of time. I found it put the modem back in the house, properly installed. With the filters, and noticed that there was not any noticeable difference in the performance or reliability.
When my DSL connection goes down, it goes down badly, suddenly and severely. There is no evidence that the house wiring had anything to do with this. One would expect a difficulty in the house wiring would have shown itself. by this time. Instead, the only relationship with the DSL quality and any phenomena is the external conditions. Namely, the telephone company has not replaced the trunk wires from this neighborhood over to their distribution point for many, many years. It is pathetic. The phone company I absolutely refuses to replace those cables in the hope that someday they will go fiber optic. If I were to wait for them to put in fiber optic my., - my beard would grow down to my knees.
Meanwhile, I just keep complaining to the telephone company using the number they recommended. And from there, making tests from their office. I will go outside and disconnect my wiring system at the terminal outside of the house. This way, when they come up with some kind of error, they can't tell me that's my house wiring. From time to time. they have sent out technicians and invariably the problem is with the telephone companies external wiring. Over the months and years they had to switch my line back and forth, looking for a pair on this old decrepit cable that will meet DSL specifications. They have stopped telling me it's my house wiring.
In other words, I know how to disconnect a wire. I know that when a wire is disconnected completely, it cannot be the reason for something going wrong. I disconnect all the house wiring and have the modem not even outside the house and the problem is still there. And over the months and years I have used different modems too. I have replace it once.
Here is my conclusion. Some phone companies just to not want to upgrade their old equipment that dates back to almost World War II. They keep thinking someday they're going to have fiber-optic cable in this area. I don't think so. Meanwhile, the cable company would be my option if I could afford it. And that is not just my opinion, this is what other people in the neighborhood are telling me also.
So there is my rant, based principally on my experience, not the fact that I have many years experience test electronic technician.
EDIT: My ISP is AT&T in northern California.
Others have complained also. See here:
http://at-amp-t-dsl-internet-reviews.measuredup.com/3823Other DSL provide might have better equipment. I don't know.