What is a good upstream power level?
Upstream power level limits depend on the number of upstream channels locked. For some networks, the power limits for 3 to 4 channels are 35 to 51 dBmV. Ideal levels are approximately 40 to 50 dBmV for single channels, 37 to 48 dBmV each for 2 to 4 channels.
What causes low upstream power levels?
A low upstream power number generally means the cable company equipment is receiving good signal levels from you. If they were receiving poor signal levels the equipment would have your cable modem increase its output levels.
What is upstream power level?
Upstream Power refers to the line signal from the cable modem to transmit data back to the cable provider. This document describes how to check the three signal levels to be within the acceptable level for the modem operate properly.
How do I fix high upstream power level?
Disconnect your cable modem from the coax and power outlet then move it to the first coax jack. Reconnect the coax followed by the power. Test your signal levels again. If the upstream power is still too high at the first jack, there is nothing you can do on your end to resolve the problem.
How do I increase upstream power?
By adding a splitter or choosing a higher loss leg can increase your Upstream signal level. It won’t cause the modem to falsely transmit more power. Doing a “reset” is normally an easy action.
What causes T3 timeouts on a modem?
T3 timeout errors are caused by too much noise signal on the upstream channel. … If the cable modem cannot raise its upstream transmit power level to a level that allows successful communication within the maximum timeout period, it resets its cable interface and restarts the registration process.
What is upstream on modem?
From Wikipedia, the free encyclopedia. In computer networking, upstream refers to the direction in which data can be transferred from the client to the server (uploading). This differs greatly from downstream not only in theory and usage, but also in that upstream speeds are usually at a premium.
How do I read Arris status?
Start by accessing your Arris surfboard cable modem by opening your web browser and using the IP address of 192.168. 100.1 (This address is also used for older Surfboards.). Once open it should show you The default page the Status page.
What does it mean when an upstream channel is locked?
connection issues
No upstream channels is locked. For a locked channel, downstream power level is outside the range of -15 to +15 dBmV. For a locked channel, downstream power level is more than three dB different from any other locked channel’s power level.
How many channels should my modem have?
16
Don’t sweat this part too much, unless you want the absolute top-tier packages your cable company can provide. Just remember that all other things being equal, higher numbers are better. Any new modem you buy should have at least 16 downstream channels; anything less is probably either old or underpowered.
Why is my upstream light orange?
UPSTREAM = AMBER means the UPSTREAM is NOT bonded. It is most likely happening since the US power is TOO HIGH.
What does US DS mean on a wifi router?
Upstream and Downstream
If you don’t know already, the US/DS stands for Upstream and Downstream. When a modem is establishing a connection, it is normal for the US/DS light to blink. However, its stops blinking and simply stays turned on once the connection is established.
What does acquire downstream channel locked mean?
Acquire Downstream Channel: This should say “Locked”, “OK” or similar. This means your modem found the frequency with which to receive information from the internet. There should always be at least 1 channel acquired with a DOCSIS 1.1 or 2.0 modem.
How many upstream channels does Comcast use?
Arris technician found the issue is most likely due to the downstream only has 31 channels (instead of 32) and upstream only has 5 channels (instead of 8). This will slow down the connection and cause stability issues with the modem.
Is higher SNR better?
To achieve a reliable connection, the signal level has to be significantly greater than the noise level. An SNR greater than 40 dB is considered excellent, whereas a SNR below 15 dB may result in a slow, unreliable connection.
What is MDD message timeout?
MDD Messages are technical terms for DOCSIS based modems. … The “Timeout” warning usually appears when the signals don’t reach your DOCSIS modem, and the internet connection doesn’t establish successfully.
What is CMTS MAC?
The CMTS-MAC is a piece of equipment inside of the VM green box, that hands out the ip address of the hub, as well as going other things. It full name is Cable Modem Termination System and it will have a physical MAC address like any other piece of network equipment.
What is a good SNR level?
Ideally, you want to aim for a higher SNR. I’d say 20 dB or greater is good SNR. Greater than 40 dB is even better! Recommended minimum SNR for data is 18 dB and for voice over wifi it is 25 dB.
What is an SNR reset?
Re: What does an SNR reset actually do? SNR does not “do” anything, its simply indicates how much margin is left, that could be used to carry extra information. The higher the SNR, the more stable the connection will be, but the speed will be lower.
What is good SNR margin?
Noise margin (also known as Signal-to-noise ratio margin, SNR) — is used to measure line quality and defines a minimum limit at which the signal level is above the noise level. … The higher the value, the better the line quality. The ‘Noise margin’ value should be 6 dB and higher.
Leave a Reply