Purchased Arris SB6183

I have in place a new Arris SB6183 router. My downstream channels (16) and upstream (4) are indicating power usage that is out of spec. I have only Ultimate Internet as a user. No cable,phone, .etc


My connection is coming straight from the box at the street and through my wall.

I am including a screenshot of my modem status.



Downstream Bonded Channels
ChannelLock StatusModulationChannel IDFrequencyPowerSNRCorrectedUncorrectables
1LockedQAM2561555000000 Hz7.8 dBmV40.9 dB00
2LockedQAM2562561000000 Hz7.5 dBmV40.5 dB00
3LockedQAM2563567000000 Hz7.5 dBmV40.7 dB10
4LockedQAM2564573000000 Hz7.2 dBmV40.4 dB00
5LockedQAM2565579000000 Hz7.0 dBmV40.2 dB10
6LockedQAM2566585000000 Hz7.4 dBmV40.3 dB00
7LockedQAM2567591000000 Hz7.3 dBmV40.2 dB10
8LockedQAM2568597000000 Hz8.0 dBmV40.6 dB10
9LockedQAM2569603000000 Hz7.6 dBmV40.3 dB00
10LockedQAM25610609000000 Hz8.3 dBmV40.6 dB10
11LockedQAM25611615000000 Hz8.4 dBmV40.5 dB00
12LockedQAM25612621000000 Hz8.7 dBmV40.6 dB00
13LockedQAM25613627000000 Hz8.8 dBmV40.6 dB00
14LockedQAM25614633000000 Hz8.9 dBmV40.5 dB10
15LockedQAM25615639000000 Hz8.7 dBmV40.3 dB10
16LockedQAM25616645000000 Hz8.1 dBmV40.1 dB20


Upstream Bonded Channels
ChannelLock StatusUS Channel TypeChannel IDSymbol RateFrequencyPower
1LockedATDMA42560 Ksym/sec37000000 Hz38.3 dBmV
2LockedATDMA25120 Ksym/sec24200000 Hz38.0 dBmV
3LockedATDMA35120 Ksym/sec30600000 Hz38.0 dBmV
4LockedTDMA12560 Ksym/sec19400000 Hz36.3 dBmV

From what I've been reading that my upstrem channel power should be +/- 3 db.

What has led me to the forums is that my internet download speed can be anywhere for 70 to 170 mb.

As an aside, my modem time is off early by an hour. This model has no user config at all.

Any help or guidance will be appreciated.


Re: Purchased Arris SB6183

Downstream needs to be between +/- 10 dBmV.  Upstream needs to be less than +52 dBmV.  I'd say your signal levels look good. 


Re: Purchased Arris SB6183

You don't configure ANYTHING in a modem, Your levels are fine, TWC hasn't gotten DST down pat...Robot Sad

Valued Participant

Re: Purchased Arris SB6183

This modem isn't 100% supported by TWC..


Re: Purchased Arris SB6183

6183's don't work IPv6 on TWC since January and the supposed firmware upgrade was never implemented. However they will do up to 300/20 speeds with no problems.



Re: Purchased Arris SB6183



Actually it's still on the list of "approved" modems for max (300/20) speeds.   It just doesn't have working IPv6 at this time.   So, technically, it's "supported", but the support just sucks. 

If you don't care about IPv6 at this point, it still works great.   But if you absolutely must have IPv6, then look elsewhere unless you have the patience of Job and can wait forever for TWC to fix IPv6.