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4 Troubleshooting

How do I check modem statistics/event logs? What do the numbers mean?

Although what is monitored and the exact name may be different depending on manufacturer, the overall information is pretty much the same. Below are some of the common terms and measurements used to judge line quality. Remember these are not hard numbers but simply a generalization of line statistics:

SN Margin (AKA Signal to Noise Margin or Signal to Noise Ratio)
Relative strength of the DSL signal to Noise ratio. 6dB is generally the lowest dB manufactures specify in order for the modem to be able to synch. In some instances interleaving can help raise the noise margin to an acceptable level. Generally speaking, as overall bandwidth increases, your signal to noise ratio decreases. So a customer that upgrades from 1.5 to 6.0 service will typically see a corresponding decrease in the signal to noise ratio. The higher the number the better for this measurement.
6dB or below is bad and will experience no synch or intermittent synch problems
7dB-10dB is fair but does not leave much room for variances in conditions
11dB-20dB is good with no synch problems
20dB-28dB is excellent
29dB or above is outstanding

Line Attenuation
Measure of how much the signal has degraded between the DSLAM and the modem. Maximum signal loss recommendation is usually about 60dB. One of the biggest factors affecting line attenuation is distance from the DSLAM. Generally speaking, bigger distances mean higher attenuation. The lower the dB the better for this measurement.
20dB and below is outstanding
20dB-30dB is excellent
30dB-40dB is very good
40dB-50dB is good
50dB-60dB is poor and may experience connectivity issues
60dB or above is bad and will experience connectivity issues

Feedback received on this FAQ entry:
  • very helpful and point to point answer

    2014-08-13 04:55:29

by Doctor Olds See Profile

Attenuation should be under 60 for all speed profiles. Attenuation takes into account distance from the Central Office and resistance on the line based on the amount of bandwidth being pushed down the cable pair. There is no specific attenuation for each different speed.

by Doctor Olds See Profile edited by fourboxers See Profile
last modified: 2011-11-08 14:05:26

Port Forwarding on SpeedStream 5200/4200

by Doctor Olds See Profile

To start with run a speedtest at »speedtest.windstream.net/

On the site there are two different tests; a Capacity Speed test, and Application Speed test. Generally you would want to run the Capacity Speed test.

Once the test is complete click on the Advanced Tab and select the View Text link. This will show the full results of your speed test. This can be posted to the DSLReports.com »Windstream forum for assistance with troubleshooting slow speed issues.

Windstream will accept speed test results from other websites, but does require one from the Windstream site as well.

by Windstream See Profile edited by Doctor Olds See Profile
last modified: 2010-03-15 10:54:25

Check this thread for full details:

»BOS Guidelines

by sashwa See Profile
last modified: 2011-12-21 12:21:48