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DSL configuratinfor W98SE

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by richa 1 view

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I have installed an Intel DSL internal modem for DSL service, and have had download speeds of 7K/sec. (similar to the same speeds that i reveived with a 56K modem) The line is trained for 640K connection, meaning that my speed should be closer to 70K. The phone techs, and the DSL techs have checked the lines, even in my house and tests are good.Where is there a place in W98SE for me to alter whatever default is being used to throttle my connection to the same as a 56K. and how would I go about doing it?

19 replies

by richa

The DSL was tested from my home using a different computer and tested good.

by mphoffar

Just a thought, but that's the type of adapter that uswest used here..unfortunately we have to initiate the adapter with a DUN connection (sigh). Anyhow, a neighbor of mine had the same problem and it turned out to be a combination of a couple of things. One was he didn't have all of the filters installed on his other phone lines. He thought he did, but there was a box hiding underneath the house that was hot as was one in another room he forgot about. Although you may not be utilizing the lines, if they're live for a phone, you'll probobly need a filter on it. This is combination with a port speed set to 38400 hindered his connection to like 6K/sec. Setting the port speed to 115200 improved it some..to like 14 or 15K, getting all the filers in got us up to 24K (it was a 250K connection)

Like the first guy said..DSL isn't perfacy, so it may take a few visits from some technicians to your house before it finally gets cleared up.

Good luck to you

Mark

by richa

checked all port speeds for com1 and com2, don't know how to check for what port the dsl is on, and the phone line is literally run in from the outside of the house to the computer, with no splits anywhere. the dsl tech checked at my line goin intomy computer and got speeds around 70K

by crimsoncub

The filters can definitely be a problem. However, other interference may occur from power cables, halogen lamps, other network and phone cables, or even attenuation from too long of phone cables. Make sure you check these out. If you're not consistently getting a dl speed of 7K, it may just be the site you're connected to. Test your speed at this site:
http://www.computingcentral.com/topics/bandwidth/speedtest.asp

by richa

That is one of 7 sites that I have tested with, and I ran the phone line in myself, avoiding all ac outlets, and the line from the outside is literally 4 feet from the computer.... see above reply... any other ideas?

by dmiles

The connection speed may be located here,open the Control Panel,right click and choose properties or open,on the general tab will specify connect at this speed only,then click the connections tab and click the port settings,this will allow you to specify your connection setting to change speed

by richa

altering the port speeds did not change anything, as they are designrd for com ports 1 and 2, and printer, not for the port that the dsl runs on.

thx though

by otl

Since DSL is basically a T1 cannellize for 56K or 64K channels. BER (Bit Error Rate) could be wrong at the CO, but it was tested with another computer, thus the line is good.
Logically the problem is a software setting in the computer. Verify your maximum connection speed is over the bandwidth you purchased, and you ISP can support it. (Possible ISP cannot support you and the 200 other high speed subscribers!)

by mmdkj.family

Your line is connected to a DSLAM card at the phone companies end. This card has a limiter. Have the phone company check to make sure your line is not being limited.

I have GTE and had to call twice to get my service up to 768kbps. They wanted tokeep me at 256kbps which is the off the shelf state of the DSLAM card.

All the adjustments I made to Windows 98SE settings, receive windows and all did not have much of an effect if any. The DSLAM cards limiter is "THE" limiter.

by hydroponic

The most important setting for DSL TCP/IP tuning is the TCP Receive Window (RWIN). check your MTU (maximum transmission unit) it is probably 576, and TCP Window Size could be as low as 2144 (an absolute no no for broadband connections), for DSL theMTU should be 1492 or 1500, the MTU should be at least 16KB, or 32KB if you have a very fast connection. The port setting mentioned in the other replies have no effect at all for a NIC card settings, even the slowest ones are capable of 10 mega bits/second (DSL "modems" are just ethernet network cards)
Also I am assuming you have at least 64 MB ram in that machine

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