The upstream power reported by your modem is a measure of how loud it has to "shout" to be heard by the "head end" - like everything else, if you "crank it to 11", you get distortion, the upstream signal quality degrades, and the speed may step down.
Lowest upstream level should be around 35, highest should be 52, mid 40s preferred. If your cable modem reports more than 52 upstream power, you need to look at your cables and splitters. One major cable company spec is 31 min 53 max. Believe it or not low transmit levels do occur just not nearly as frequently as high transmit levels. The statement, "The lower this number is, the better. You will find a lot of different opinions on what threshold is best and each cable system will differ when it comes to what works in the real world vs.
This is even more crucial when you use an eMTA for voice and internet because low upstream levels can bring call quality symptoms to the front that internet-only use doesn't necessarily present.
Therefore, the modem needs to work harder to be "heard" by the CMTS. Additionally, if you are sitting at the end of the system referred to as a "end of line" or "low value" tap , your modem really should optimally be between , since the modems have to talk further upstream through the entire leg of a system to be "heard". Many others may dispute that last statement as lower levels may work flawlessly in various other systems. I am simply speaking from my personal experience in the few systems where I have worked and stating what I have found to be optimal over the last 10 years.
What's the difference between this and db? I eliminated a two way splitter from the main line in:cable service - Out:Modem and 8 port splitter. I think the circuitry of the amp is causing the signal degradation. Any feedback you provide is sent to the owner of this FAQ for possible incorporation, it is also visible to logged in users.
Cable Modems. Open navigator Open navigator Any recommendation on brands of cable modems? The downstream power is still high. Not certain that is the root cause of the problem but you can try inserting a minus 6dB attenuator pad into the coax line at the back of the modem to balance out those power levels and see;.
Your Home Network. Xfinity Community Forum. Downstream power levels Are these power levels within range? My downstream levels on some of my channels are ranging from I'm experiencing t3 timeouts and reboots.
That's high to being out of spec. What do the upstream power levels look like? There are several factors for your downstream power level to go which include outdated firmware, network bug, connection error, damaged hardware, etc. Few troubleshooting solutions would help you a lot when done in the right direction.
Refer to the following solutions carefully if you are facing persistent low downstream power level issues:. Before you jump to the conclusion that your downstream power level sucks, make sure that you check the speed of your internet.
Run a speed test and find out if you are getting the exact speed you have been paying for. If the resulted speed and your ISP speed matched, proceed further.
Sometimes you face low downloading and uploading speeds when a network bug is resting somewhere within your network. Make sure you properly power cycle your modem. Here is how you do it properly:.
Most of the time your downstream speeds stay too low when your firmware version is not compatible with the modem. Make sure you keep your firmware version updated to experience the high downloading and uploading speeds.
For improved downstream power level, make sure that you properly reconnect all the modem-connected devices. Try to place the visit of a well-experienced technician. He will look into it and crack your low downstream power level issues.
Wireless Bluetooth Wi-Fi Refer to the following solutions carefully if you are facing persistent low downstream power level issues: Run Speed Test: Before you jump to the conclusion that your downstream power level sucks, make sure that you check the speed of your internet. Power Cycle Your Modem: Sometimes you face low downloading and uploading speeds when a network bug is resting somewhere within your network.
Here is how you do it properly: Shut down all the computer and mobile phone devices connected to your cable modem. Power down your cable modem and unplug it. Leave your modem unplugged for 60 to 90 seconds. Plug your modem back and turn it on along with the router if you have one.
Allow your modem to get booted up completely until you see the first segmented LED lights blown. Restart your modem. Check If Your Firmware Is Updated: Most of the time your downstream speeds stay too low when your firmware version is not compatible with the modem.
0コメント