![]() If any splitter was the problem, replace it. Temporarily remove unnecessary splitters indoors 1 by 1 until the problem goes away use line extenders which do not split if you need that to get the cable length you need. In every such case, the FIRST thing to do, if there isn't another obvious problem like frayed or damaged cable, should be to replace every splitter in the path. Physically discharging the line by touching the center conductor of a cable to a grounded metal surface (like the outside of the cable jack on the modem itself yes, it can spark!) can help for a few days, but the cause is likely to build up again. In a lot of cases, there is static on the line from bad cabling or more commonly defective or lightning-damaged splitters and passives. Reconnecting, of course, will not always fix the underlying physical condition causing poor upstream performance. That will likely cause the CMTS (headend) to stop listening to all but 1 of them to reduce interference, slowing you down, and if the cause of interference continues, your modem will probably exceed the 58 dBmV absolute limit and have to reconnect. Contrary to what that page says with 55 dBmV, anything over 51.5 dBmV is cause for concern on a modem using multiple upstream channels (which is all of them these days). That increases interference with other customers, and eventually you hit a limit and are not allowed to transmit any louder. That means the other end couldn't hear you clearly, so the modem started talking louder. In the upstream direction, it is far more common and worse for the transmit power to be too high than too low. That's why the numbers are so different.) The opposite is true of downstream: you don't see the real transmit power, so you rely on receive and SNR. As the page notes, you don't see the real upstream SNR, or the upstream receive power, so you have to rely on the upstream transmit power. (Keep in mind the things your modem sees and the thing Comcast sees are the opposite stats for each direction. If your levels are beyond this range, you will likely see frequent disconnects or modem reboots." For network administratorsīelow are some related resources for IT admins.Will emphasize this in the page you were linked: "Upstream Power Level: This should be between 35dBmV and 55dBmV. Remember, even if everything’s good at your end, the other participant might have a problem with their connection. It might be worth upgrading your hardware if all else fails. ![]() Consider upgrading to a newer router and adapter with the latest Wi-Fi standards and higher gain antennas which supports heavy simultaneous usage from multiple devices better. Regularly update the driver and firmware of your router and network adapter. If you often have a slow Internet connection, ask your ISP for assistance in solving the issue. Check the result against the speed your ISP is supposed to be providing. Do a speed test online (if you don't have an app, type speed test into your web browser and pick one) or ask your Internet service provider (ISP) to test your download and upload speed for you. Check your speedįor a high-quality video call, both you and the other participant need to have enough bandwidth. This also includes reducing potential interference from neighboring Wi-Fi signals. Avoid being close to other electronic devices (microwaves, cordless phones, baby monitors), preferably in line of sight of your Wi-Fi devices. Get closer to the router or add a repeater to improve the signal strength. Minimize the number of walls and ceilings between the router and your device. Pros: Faster throughput, less congested channels, more channels that don't overlap.Ĭons: Shorter range compared to 2.4 GHz networks, doesn't go through walls and other obstacles as well as 2.4 GHz networks, not as widely used by other devices. Pros: Longer range, better at going through obstacles (for example, walls), better support (more wireless devices support 2.4 GHz compared to 5 GHz).Ĭons: Slower throughput, fewer channels that don’t overlap, more congested than 5 GHz networks because household devices (for example, microwaves and cordless phones) and Bluetooth devices use the 2.4 GHz network band. Choose the right Wi-Fi bandwidthĬhoose 2.4GHz or 5GHz based on your home layout. Download a Wi-Fi Analyzer app that can check for Wi-Fi dead spots, congestion caused by too many devices connected, and any interference areas. A poor Internet connection can cause low-quality audio and video, delays, and dropped calls.īelow are some tips on how to improve your internet connection.
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