Conclusion Given your low SNR, low downstream speed, high latency and packet loss I recommend you call your ISP, open a ticket with them, and ask them to test your line. What is Attenuation? What is SNR? The higher your SNR is, the better, as there is less background Noise. Improve this answer. Excellent answer. Anyway, I'll keep trying, thanks for the amazing answer. Nerds' update, two years and a FTTC line later.
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Does ES6 make JavaScript frameworks obsolete? Featured on Meta. Now live: A fully responsive profile. Related 0. Hot Network Questions. What figures am I looking for? What is Sync Speed? What is Attenuation? What is SNR? What is SNR Margin? How fast should my connection be? Can I improve my line stats? What do the other figures mean? Line stats are a set of various figures that can give some indication about the status and condition of your adsl connection.
When using your linestats as a diagnostic tool you have to look at all the figures and not just rely on say just the sync speed or SNR Margin. When looking at your linestats, you generally need to look at the downstream figures. Most adsl modems or routers will provide you with your dsl line stats. I maintain a list of instructions for the most commonly used adsl modems and routers, which will help you find the figures you need. However, due to the time element involved, most ISPs are very reluctant to perform this test unless it is specifically in relation to an adsl fault.
A BT Openreach adsl faults engineer will also be able to access your line stats by hooking up his equipment to your line. Various makes of routers may name the figures slightly differently, but the important figures that you are looking for should be something similar to:.
For fault diagnostics, someone who is experienced in reading line stats will also look at other figures such as Power, and will also look at the different types of errors in comparison to uptime. The later mentioned figures aren't something that can really be defined, because it depends on all of the line variables and is something that only really comes with experience after reading many line stats.
This is the speed at which your router synchronises connects to the exchange equipment. Fixed Rate lines are generally kbps, 1Mb or 2Mb and these have corresponding sync speeds of kbps, kbps and kbps respectively. Rate Adaptive lines will sync at the best speed they can for the length and condition of your line, therefore its not unusual to see slightly different sync speeds if you reboot your router. For example a line syncing at kbps could expect to see a maximum throughput speed of around 7.
Line attenuation is in relation to the "loop loss" on your line. The lower this figure the better, and the better chance you have of getting the faster speeds. Attenuation is a term used to describe the reduction of the adsl signal strength that occurs on the copper pair over distance and is measured in dB decibels.
What is considered good DSL line attenuation? Line attenuation loss is a measure of how much the signal has degraded between the DSLAM and the modem.
This is largely a function of the distance from the exchange. The lower the dB, the better for this measurement. Attenuation is logarithmic and each 3dB of attenuation halves the strength of the signal power received. This may be due to measurement across only the frequencies actually in use, vs. If you are looking at the value on your router, there may be a multiplier.
For example, mine has a 0. High value Line Attenuation very poor. SNR margin Downstream: 9. Yeah, I have a TpLink brigde router and it has a 0. The closer you are to the ISP, typically the better speeds you can get.
It also depends on the amount of users, who connect through the same copper. In short, the lower this number is, the better:. SNR Margin is a value to set in order to get the speed you desire. It's the difference between the actual SNR dB noise and the line attenuation required to sync at a specific speed. Sign up to join this community. The best answers are voted up and rise to the top. Stack Overflow for Teams — Collaborate and share knowledge with a private group.
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