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Several other connection options exist. Residential DSL is often provided with a combined DSL modem and card, that is added to your PC. This card is all you need. These cards are known as PCI DSL modems, and are designed for Intel PCs.
Another connection option is a USB DSL modem. These are newer and more likely to suffer from incompatibilities wth your PC or operating system, but they have the advantage of working on Macintosh, and possibly USB capable laptops as well.
For small business, you are likely to already have network cards, as you would almost certainly have an existing local area network.
The use of filters is something that doesn't require a tech to come out and do. This means that it saves the ISP or CLEC some money for the tech.
Some ISPs (or you can ask) will install a separate line(pair) that is only for the DSL line. This requires a whole jack to be used and no phones or other devices attached to that jack. In this situation, no filters are needed.
Also see this discussion on "home runs" by SplitPair in the Bellsouth forum.
Also keep in mind other terminal points, such as your cable/satellite TV decoder.
Unfortunately, surge protectors have also been reported to reduce download speed, so you would be advised to test your speed before and after installation to make sure that it adds no problems to your line.
A switch knows where traffic is bound for, thus a switch is able to handle its advertised speed (10mbit or 100mbit) on EACH port that it has.
With a correctly configured switch, and full duplex connections, ethernet interfaces should not show "collisions" when attached to a switch.
RadioShack has a surge protector (Model: 61-2146) specifically for DSL modems.
From another user: I use an APC Back-UPS Office with network/cable protection and cannot see a measurable difference between running through the protector and going directly to the NIC.
Find out more here.
Linksys has a USB router (BEFSRU31 - EtherFast Cable/DSL Router with USB and 3-Port 10/100 Switch) that only replaces you NIC card in your PC. You cannot hook your USB DSL modem into it.
Check here for equipment pictures.
SDSL (Nokia, Paradyne, Lucent Stinger , Nortel) TER/72
IDSL/ISDN (Copper, Nokia, Paradyne, Lucent, Switched ISDN) TER/31
ADSL (G.Lite/G.DMT) TER/61
Analog V.90 TER/20
Netopias can also have the same DSL technology in both slots and combine them in to a Single Pipe (Duoble bandwith) but the ISP and CLEC must support it.
Because I found better performance (speed) when my dataquest modem was located some distance from my computer, i.e. directly at the telephone entry point, I wanted a way of asking my modem to resync to a higher data rate periodically when I discovered it had ratcheted down to a lower rate due to loss of sync. This saved a long walk down the driveway in the rain.
Go to the built-in modem diagnostic web page, (»172.16.0.254) then click on "Help", then click on "advanced settings", then without changing anything click "save settings".
This forces a resync. One can watch the progress by going back to http://172.16.0.254/adslstats.htm, the dsl diagnostics page and periodically asking for a reload.
It takes a bit of time for anything to happen, and you will see 0 bytes/sec for a time, then when it's all setup (at the hopefully higher rate), the new data rate will be displayed.
Some restraint is necessary here as the ratcheting down in speed is supposed to place you at an acceptable speed for your line condition, but I find that periodic restarts keep the speed up.
I found much improvement by placing my modem far from the computer and home generated noise. The ethernet connection is now 250 ft. long and seems to work flawlessly.
If you download the DMT firmware upgrade and follow the instructions EXACTLY you will get a working Cisco 678 with DMT that was previously set at CAP.
As a Qwest customer, I got the firmware and followed their instructions here:
using their downloads and hyperterminal.
Cisco has a guide here:
Of course, the standard warnings apply that if you mess up the firmware upgrade you will be the proud owner of a new doorstop instead of a router.
Since at the central office a DSL connection using CAP uses different hardware than DMT uses, you will lose your DSL connection until your provider makes their hardware change at the Central Office. You will see your WAN link and activity lights go dark until this happens.
After flashing, you will also need to completely reconfigure your modem as the setup commands for DMT are different than for CAP. (e.g. for Qwest see »my.qwest.net/nav4/help/your_acct···675.html )
Also read About DSL for lots more information