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General discussion

problems in my adsl router !!

Aug 16, 2005 6:53PM PDT

it keeps disconnecting every while !! poor connection all the time and slow mostly !!
when i log on routers properties and i look in ADSL section i find that ->>

- -down stream - up stream
SNR margin-------13.5-------6.0
Line attention---45.6-------31.5
Errored seconds--5890-------933
Loss of signal---25---------25
Loss of frames---0----------0
CRC errors-------28---------627
Data rate--------1024-------96

although my connection is supposed to be 512 kbs but it shows that ... and these errors are recorded in about 24 hours !! plz tell me what to do if you know any thing about it !! it bugs me !

Discussion is locked

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Look for a firmware update...
Aug 16, 2005 7:00PM PDT

Also, if this is a stand alone router, try your PC directly to the modem. See if this clears the problem.

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Not your problem...
Aug 17, 2005 3:05AM PDT

Those statistics are pretty bad. But you probably can't do much about them. They reflect bad line conditions.

SNR margin (signal to noise ratio margin) measures how much the noise on the line can increase before it overwhelms the DSL signal. Higher is better, mid-30s is acceptable. Yours are in the teens/single digits. That's bad.

Line attenuation measures signal loss from the CO to you. Lower is better, again mid-30s is ok. Yours are in the 40s. That's bad.

So what can you do? If the inside wiring in your house is bad, you need to fix that, or work around it. How do you "work around it?" You install a separate dedicated line from the NID (network interface demarcation, the grey box on the wall where the phone line comes in: on the house side of that box, its your problem; on the street side of that box, its the phone company's problem) to the modem. You can also install a whole house splitter/filter at the source of that run and then you don't have to worry about all those dang pigtail filters behind every phone.

So how do you determine if your inside wiring is bad? You disconnect your modem at the wall jack and plug it directly into the test jack inside the NID (and this will mean moving your computer to that area to, or using a temporary long network cable). This will disconnect your inside wiring and all the phones for the duration of the test, but it will connect your DSL apparatus directly to the telephone network at the last point of the phone company's responsibility. If the modem statistics are still awful, then the problem is clearly in the line before it gets to your house. Only the phone company can repair that.

dw