4 upstream channel bonding - post here
 

As the title says, post here if you have 4 upstream channels bonded on your modem, alongside where in the country you are and upstream stats if you can.

It's a project in progress on the VM network so it'd be interesting to see just where they are.

It's a precursor to higher upstream speeds having the 4 channel bonding done.

Re: 4 upstream channel bonding - post here
 

4 x 16QAM, Area20 Wirral

Re: 4 upstream channel bonding - post here
 

Still only two here (Nottingham).

Re: 4 upstream channel bonding - post here
 

Only two here as well. Surrey. I'm on VIVID 350 as well so they are not giving higher speed customers priority.

Re: 4 upstream channel bonding - post here
 

The tier the customers on won't have any bearing on how many upstreams are in use. It's all about the equipment out in the field. Some areas have 65mhz upstreams some have 42mhz. The 42mhz areas on only physically fit 3 upstreams, so the modems will run on 2 of the 3. The 42mhz areas will be upgraded in due course though. And the areas running older kit, as the future plan will be to go above 65mhz

Re: 4 upstream channel bonding - post here
 

Still 2 here.

Re: 4 upstream channel bonding - post here
 

I was rather hoping people with 4 channel bonding would post, not people who are still not on it, and the first post makes clear what I had in mind.

This was a thread modeled after the ones here.

http://www.dslreports.com/forum/comcast

Looks like it's a bit late for that. Oh well. :)

Re: 4 upstream channel bonding - post here
 

Can someone explain the benefits of moving to 4 upstream channels (from 2)? Many thanks!

Re: 4 upstream channel bonding - post here
 

Read the first post.

Re: 4 upstream channel bonding - post here
 

Manchester ( Baguley) area 20.

Re: 4 upstream channel bonding - post here
 

Your stated aim was to see how far the project had progressed.
Therefore knowing it has not reached an area seems as useful as knowing it has, otherwise you have no idea one way or the other for that given area.

Re: 4 upstream channel bonding - post here
 

4 bonded upstreams wolverhampton

Re: 4 upstream channel bonding - post here
 

Thanks for your helpful reply.

The reason I asked was when I was researching this to better understand things, I came across this on the Wikipedia page:

https://en.wikipedia.org/wiki/DOCSIS

so I was curious if the 2 channels we have now can, in the real world, be pushed to get nearer these theoretical limits (2 channels ==> 54Mbps). The only reason I went to 350/20 is for the upload and so if our CMTS is stuck on 2 channels for the time being, would this preclude higher uploads even though, on first reading, the DOCSIS page hints at more.

Re: 4 upstream channel bonding - post here
 

More channels = more speed.

Though having more channels doesn't mean you'll get more speed, it does mean Virgin can push more speed down the line.

Re: 4 upstream channel bonding - post here
 

RG41

Upstream bonded channels
Channel ID Frequency(Hz) Mode Power
(dBmV) Modulation Channel Bandwidth(Hz) Symbol Rate (ksps)
6 39400000 ATDMA 45.3 64 qam 6400000 5120
8 25800000 ATDMA 45.3 16 qam 6400000 5120
7 32600000 ATDMA 45.3 64 qam 6400000 5120
5 46200000 ATDMA 45.3 64 qam 6400000 5120

When I use the SNMP browser call on the Hub 3, my mini-slot size has dropped from 4 to 2.

---------- Post added at 19:47 ---------- Previous post was at 19:40 ----------

You would get the 20 meg if the upstream contention is low.

Re: 4 upstream channel bonding - post here
 

I am on 2 channels and have no problems uploading at 2.54MB/sec

Re: 4 upstream channel bonding - post here
 

Nor me:

https://www.cableforum.co.uk/images/...2017/08/10.png

I was just curious what speeds 2 channels could actually support in the (VM) real world when the Wikipedia maximum is over 50Mbps

Re: 4 upstream channel bonding - post here
 

it is all depends on the modulation of the upstreams. Some are still QAM16 and some are QAM64. Those that are QAM64 have a 50% increase on throughput vs QAM16

http://www.radio-electronics.com/inf...qam-256qam.php

Re: 4 upstream channel bonding - post here
 

But that additional throughput goes away when you only allow 2 ticks instead of 4 for your transmit window. Nothing else has moved; it's still a 6.4MHz wide channel (as evidenced by the 5120K symbols/sec rate); the tick is still 6.25us.

Or, as Igni has mooted (not in his words though), has Cisco increased simultaneity at the CMTS so as to allow smaller transmit windows and thus allow more users to to get onto the upstream with smaller amounts of data that won't get too much contention at the CMTS. Something like that?

Re: 4 upstream channel bonding - post here
 

they must have done something because they wouldn't have spent all that time trying to get the upstreams up to qam64 if it wasn't going to provide some benefit to them (you know what VM are like).

Re: 4 upstream channel bonding - post here
 

They have the aim of giving at least 10:1. So by cleaning up the upstream components, they can get to 64QAM under DOCSIS 3.0.

And then they reduce the Mini-slot size from 4 to 2. Thinking deeper, and again with an eye to what Igni said, they may be using something more powerful at the Cisco CMTS end by way of FEC correction; like the DOCSIS 3.1 FEC handling regime. Whether or not that sits well with DOCSIS 2 or DOCSIS 3, I don't know. But it is the only thing I can think of that increases upstream efficiency. Igni will no doubt put me right on this.

Re: 4 upstream channel bonding - post here
 

yeah, I just can't wait for docsis 3.1 though. I had a quick read of the wiki article and it is going to be like jumping to warp speed.

Re: 4 upstream channel bonding - post here
 

And all I want is more than 20 up for once.

Re: 4 upstream channel bonding - post here
 

Unfortunately I doubt Virgin will be rolling it out like that, I expect the initial 3.1 trials to use the same kinds of speeds we get now. I expect it'll be some years before we see gigabit downloads and probably a good 5+ years at the least before we see 100Mbit+ upload speeds.

Re: 4 upstream channel bonding - post here
 

They are rolling it out like that, though using 3.0 upload channels for the foreseeable. Still plenty of life in 3.0 as a whole so no rush.

Re: 4 upstream channel bonding - post here
 

We had a power cut yesterday for an hour just after midday but it took til after eight for the boxes to reconnect but now I have 4 upstreams bonded on the SH1 but only at QAM16:

Upstream US-1 US-2 US-3 US-4
Channel Type 2.0 2.0 2.0 2.0
Channel ID 68 65 66 67
Frequency (Hz) 53700000 Hz 45800000 Hz 35800000 Hz 27400000 Hz
Ranging Status Success Success Success Success
Modulation QAM16 QAM16 QAM16 QAM16
Symbol Rate (Sym/sec) 5120000 5120000 5120000 5120000
Mini-Slot Size 128 64 128 128
Power Level (dBmV) 47.0 dBmV 46.0 dBmV 46.8 dBmV 46.8 dBmV
T1 Timeouts 0 0 0 0
T2 Timeouts 0 0 0 0
T3 Timeouts 2 2 2 2
T4 Timeouts 0 0 0 0

Power levels up and down are nicely within spec. :)

Re: 4 upstream channel bonding - post here
 

they are all qam16

Re: 4 upstream channel bonding - post here
 

They've all moved up to QAM64 now. :)

Re: 4 upstream channel bonding - post here
 

I've had four upstream channels for at least seven months now, but they are all still on QAM16

https://www.cableforum.uk/images/local/2018/05/2.png

Re: 4 upstream channel bonding - post here
 

if you get full speed and there aren't any congestion issues them don't worry about it. Moving all 4 channels to qam64 only gives you a 50% bandwidth increase.

Re: 4 upstream channel bonding - post here
 

I don't usually check my network status, but after reading this thread I thought I would.When I checked it yesterday, I only had one upstream channel, I did a reboot and found I now have 4 :).Living in the Blackburn area.

Upstream Channels Lock Status Channel ID Frequency Modulation Tx Power Mode Channel Bandwidth Symbol Rate
Locked 4 25800000 Hz ATDMA 49.5 dBmV 64QAM 6400000 Hz 5120 Ksym/sec
Locked 2 39400000 Hz ATDMA 49.5 dBmV 64QAM 6400000 Hz 5120 Ksym/sec
Locked 1 46200000 Hz ATDMA 48.5 dBmV 64QAM 6400000 Hz 5120 Ksym/sec
Locked 3 32600000 Hz ATDMA 49.3 dBmV 64QAM 6400000 Hz 5120 Ksym/sec

Re: 4 upstream channel bonding - post here
 

You should never have 1 upstream and everyone should be on a minimum of 2. I was going to put it down to you misreading the stats but i think it has got something to do with your power levels. If they creep above you are going to start having problems and would explain why you can only only see 1 channel. Keep your eye on it.

Re: 4 upstream channel bonding - post here
 

Thanks for that GM, and I will keep an eye on them.

Re: 4 upstream channel bonding - post here
 

If the power levels get too high it becomes unstable, you will drop your connection while the interface resets that will be when you only lock onto one upstream because the levels are out whack. Either that or it is so bad you wont lock onto any at all at which point it will start all over again. Are you getting any t3 or t4 timeouts?

Re: 4 upstream channel bonding - post here
 

Is it possible for the upstream to fluctuate between 1 & 4 channels? I have googled what you mentioned regarding t3 and t4 timeouts, but still none the wiser. I don't have any problems with my broadband speeds or connection problems as far as I know.I have noticed my power levels are slightly higher than yesterday.

Upstream Channels
Lock Status Channel ID Frequency Modulation Tx Power Mode Channel Bandwidth Symbol Rate
Locked 4 25800000 Hz ATDMA 49.8 dBmV 64QAM 6400000 Hz 5120 Ksym/sec
Locked 2 39400000 Hz ATDMA 50.0 dBmV 64QAM 6400000 Hz 5120 Ksym/sec
Locked 1 46200000 Hz ATDMA 48.5 dBmV 64QAM 6400000 Hz 5120 Ksym/sec
Locked 3 32600000 Hz ATDMA 49.3 dBmV 64QAM 6400000 Hz 5120 Ksym/sec

Re: 4 upstream channel bonding - post here
 

Nope, it has been about 15 years since people were on one upstream channel. You should be on at least two and most people are on three or four. They operate in what are called "bonding groups" up to a maximum of 4 channels. If 4 channels are available to your area then you use all 4 channels all the time, not some random number up to 4.

I wasn't trying to confuse you. Which shub have you got? There should be a table similar to your power levels under the same upstream tab which tell you how many T1, T2, T3 and T4 timeouts you have, ideally it should be 0. As an example, if you have got a shub 3 it will look like this:

Re: 4 upstream channel bonding - post here
 

Has it really been 15 years since only 1 upstream? Surely that is not right?

Re: 4 upstream channel bonding - post here
 

I know you weren't trying to confuse me, I'm just a little thick:) I am on shub 2, the only info I found on time outs was this

Modem Initialisation
Stage Status
Downstream Acquisition Locked
Primary Frequency 266750000 Hz
DHCP Done
TFTP Done
Time Of Day 18:36:07 BST
Security BPI+
Counters T1,T2,T3,T4,Sync,Resets 000,000,000,000,000,000

Re: 4 upstream channel bonding - post here
 

fair enough, more like 12 years because I can remember having one upstream on my ambit 256

that's cool, no T3 or T4 timeouts which is good. Apart from that reboot you did have you been experiencing any connectivity issues/drop outs or has everything been okay as far as you are aware?

Re: 4 upstream channel bonding - post here
 

I was thinking it was like 5years since we went to 2 upstreams but I can't find any info on it, just shocked it has been that many years since we all went to 2.

Anyone know for sure?

Re: 4 upstream channel bonding - post here
 

Na, i had 2 upstreams on my ambit 300 and that was back in 2009 at least.

Re: 4 upstream channel bonding - post here
 

I did lose my connection last week for a minute or so, I just put it down to my VPN playing up. Thanks again for taking the time to answer my queries, much appreciated.

Re: 4 upstream channel bonding - post here
 

np, if you power levels go above 50 or you start experiencing drop outs you need to give VM a ring on 150 and a tech to come out and fix it. As an fyi we haven't discussed your downstream power levels but anything between -7 and +7 is ok and they want to be as close to 0 as possible. Around 0 and +3 is awesome.

Re: 4 upstream channel bonding - post here
 

My downstream channels are averaging around +2.3 so no problem there. Upstream seems to be consistent at between 49.5 for 3 channels with one at 50, so I will keep an eye on these and for drop outs.

Re: 4 upstream channel bonding - post here
 

If you've not already done it set up a BQM monitor at thinkbroadband. If you start seeing packet loss or increasing latency then it's onto VM to get it fixed.

Re: 4 upstream channel bonding - post here
 

Should I be concerned about this?

https://www.cableforum.uk/images/local/2018/05/4.png

Re: 4 upstream channel bonding - post here
 

Na that's fine. You dont need to be anal about checking the graph but if you think your connection is playing up or you start getting random disconnects then you need to check the graph. You are looking for fat red lines top to bottom.

Re: 4 upstream channel bonding - post here
 

Thank you, GM.

Re: 4 upstream channel bonding - post here
 

Work being done in my area today (Northants - Kettering) Area 31

Gone from 2 to 4 up streams.

US-1 US-2 US-3 US-4
Channel Type 2.0 2.0 2.0 2.0
Channel ID 89 92 91 90
Frequency (Hz) 46200000 25800000 32600000 39400000
Ranging Status Success Success Success Success
Modulation 16QAM 16QAM 16QAM 16QAM
Symbol Rate (Sym/sec) 5120000 5120000 5120000 5120000
Mini-Slot Size 4 2 2 4
Power Level (dBmV) 46.21 43.75 44.75 45.75

Re: 4 upstream channel bonding - post here
 

Do post them again later today when it's settled down. The Mini-slot size is all over the place and one of the power levels (US-1) looks like its moving around.

Re: 4 upstream channel bonding - post here
 

Four bonded here in Derby

Upstream bonded channels
Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID
1 39400000 45.8 5120 16 qam 83
2 32600000 45.3 5120 16 qam 84
3 46200000 45.8 5120 16 qam 82
4 53700000 46.8 5120 16 qam 81

Re: 4 upstream channel bonding - post here
 

This is after a reboot yesterday morning. The T3 timeouts are during start up only. Connection seems fine.

US-1 US-2 US-3 US-4
Channel Type 2.0 2.0 2.0 2.0
Channel ID 91 92 90 89
Frequency (Hz) 32600000 25800000 39400000 46200000
Ranging Status Success Success Success Success
Modulation 16QAM 16QAM 16QAM 16QAM
Symbol Rate (Sym/sec) 5120000 5120000 5120000 5120000
Mini-Slot Size 2 2 4 4
Power Level (dBmV) 43.75 42.75 44.75 45.00
T1 Timeouts 0 0 0 0
T2 Timeouts 0 0 0 0
T3 Timeouts 2 0 0 0
T4 Timeouts 0 0 0 0
https://www.cableforum.uk/images/local/2018/05/5.png
https://www.thinkbroadband.com/broad...Broadband Ping

Re: 4 upstream channel bonding - post here
 

We also now have 4 upstream channels is Torbay ive no idea when they appeared though


Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID
1 25800000 45.8 5120 64 qam 36
2 32600000 47 5120 64 qam 35
3 39400000 47.8 5120 64 qam 34
4 46200000 47.5 5120 64 qam 33

Re: 4 upstream channel bonding - post here
 

Upstream Channels
Lock Status Channel ID Frequency Modulation Tx Power Mode Channel Bandwidth Symbol Rate
Locked 78 39400000 Hz ATDMA 44.5 dBmV 16QAM 6400000 Hz 5120 Ksym/sec
Locked 77 46200000 Hz ATDMA 45.0 dBmV 16QAM 6400000 Hz 5120 Ksym/sec
NotLocked 0 0 Hz 0 dBmV 0 Ksym/sec
NotLocked 0 0 Hz 0 dBmV 0 Ksym/sec


Still 2 upstream channels in Newton Abbot...

---------- Post added at 09:09 ---------- Previous post was at 09:00 ----------

US-1 US-2 US-3 US-4
Channel Type 2.0 2.0 2.0 2.0
Channel ID 78 80 79 77
Frequency (Hz) 39400000 25800000 32600000 46200000
Ranging Status Success Success Success Success
Modulation 16QAM 16QAM 16QAM 16QAM
Symbol Rate (Sym/sec) 5120000 5120000 5120000 5120000
Mini-Slot Size 2 2 2 2
Power Level (dBmV) 44.75 42.25 43.00 45.00

Rebooted and got 4. All on 16QAM though...

Re: 4 upstream channel bonding - post here
 

don't worry about it, qam64 is only 50% faster than qam16 so you aren't missing out on much, especially if you haven't got any speed probs anyway.

Re: 4 upstream channel bonding - post here
 

In Heckmondwide.

US-1 US-2 US-3 US-4
Channel Type 2.0 2.0 2.0 2.0
Channel ID 85 87 86 88
Frequency (Hz) 46200000 32600000 39400000 25800000
Ranging Status Success Success Success Success
Modulation 16QAM 16QAM 16QAM 16QAM
Symbol Rate (Sym/sec) 5120000 5120000 5120000 5120000
Mini-Slot Size 2 2 2 2
Power Level (dBmV) 41.00 40.50 41.50 39.25
T1 Timeouts 0 0 0 0
T2 Timeouts 0 0 0 0
T3 Timeouts 0 0 0 0
T4 Timeouts 0 0 0 0

Re: 4 upstream channel bonding - post here
 

Guess I'm part of the 4 upstream club now.

https://www.cableforum.uk/images/local/2018/05/9.png

Re: 4 upstream channel bonding - post here
 

what does this mean from my hub?


https://www.cableforum.uk/images/local/2018/05/10.png

Re: 4 upstream channel bonding - post here
 

you are using 4 upstream channels

Re: 4 upstream channel bonding - post here
 

Is that good or bad >.<

Re: 4 upstream channel bonding - post here
 

4 is better than 2. QAM64 better than QAM16.

It allows the system to better balance / share the available capacity.

Re: 4 upstream channel bonding - post here
 

Is there any chance of getting QAM64 or do this not get upgraded readily by VM?

And what does that do, provide faster speeds or does it help with latency?

Re: 4 upstream channel bonding - post here
 

Has anyone noticed an actual improvement in service when going from 3-4 upstreams?

Still on 3 but never had an issue with congestion, suspect that's why we're still on 3 :D

https://www.cableforum.uk/images/local/2018/05/11.png

Re: 4 upstream channel bonding - post here
 

The level of modulation used is a result of the hub negotiating the connection to the cabinet. If the signal to noise ratio is good enough the connection will automatically go to QAM64.

Higher modulation means more throughput and you're more likely to get your provisioned speed.

Don't think it improves latency though.

Re: 4 upstream channel bonding - post here
 

I wont bore you with the technical details but qam64 is 50% faster than qam16. The idea is that more channels increases the amount of available bandwidth and couple that with increased modulation increases it further. So.........going from 2 upstreams at qam16 (which is what everyone used to be on) to 4 upstreams on qam64 triples (x3) the amount of available bandwidth to you. It sounds great but isn't going to do anything for you unless you had issues to start off with (which I never have) plus it gives them plenty of leg room for future upgrades.

nope

nope

Re: 4 upstream channel bonding - post here
 

Some areas still are on that. I know this area was, unless it's changed in the last few weeks. I could connect the Hub up to see, still got a week or so before the cancellation goes through.

Re: 4 upstream channel bonding - post here
 

Yes still on 2 upstreams in cb24, I am along way from the cabinet so I guess that is why I never see qam64.

Re: 4 upstream channel bonding - post here
 

I visited my parents in Newport today and they are on 4 x 16qam. I'm a few miles down the road still on 2 x 16qam.

Re: 4 upstream channel bonding - post here
 

The only thing I've noticed is that my graph went from this:

https://www.cableforum.uk/images/local/2018/05/12.png


To this:

https://www.cableforum.uk/images/local/2018/05/13.png

Re: 4 upstream channel bonding - post here
 

Interesting, wonder if the local node has been done. Hopefully it has as would of helped with the upstream congestion, if not solved it. Still not enough for me to cancel the cancellation though.

Re: 4 upstream channel bonding - post here
 

I now have 4 bonded upstreams since rebooting my hub yesterday (St Helens area).

1 32600000 36.3 5120 16 qam 3
2 53700000 37.8 5120 64 qam 5
3 25800000 36.3 5120 16 qam 4
4 39400000 37.8 5120 16 qam 2

Only 537 is 64QAM but I've been told that's normal for my area?

Re: 4 upstream channel bonding - post here
 

More Upstream channels better latency as not as congested as before.

Re: 4 upstream channel bonding - post here
 

I thought so still a welcome surprise just getting 4 up channels randomly.

Re: 4 upstream channel bonding - post here
 

Let's hope the next step is a capable CPE with has a modem mode from day 1 and no chipset issues :)

Re: 4 upstream channel bonding - post here
 

4x QAM64 upstream channels on my Dad’s connection now. On Telf14.

Re: 4 upstream channel bonding - post here
 

I'm on 4 x QAM64 upstream channels in Brighton area 20

Re: 4 upstream channel bonding - post here
 

Still 2 x 16qam in Muxton. Can't say I've ever noticed any upstream issues though, so probably no need for more.

Re: 4 upstream channel bonding - post here
 

I am not on 4 yet but have just gone to 2 qam64s for the first time ever so maybe they're upto something here too.

Re: 4 upstream channel bonding - post here
 

I did a reboot of the Hub on Tuesday evening and then it came back with 4 upstream channels. Might be worth a try if you haven't already.

Re: 4 upstream channel bonding - post here
 

SM4 area (fed from New Malden) Changed from 2 x 64QAM upstream channels to 3 x 64QAM upstream channels today. Was notified of config work as this is a business service, the work was listed as New Malden D3 config 8.

Surprised it didn't go right to 4 as in other areas.

Re: 4 upstream channel bonding - post here
 

I went from 2 QAM64 to 3 QAM64 to now at 4 QAM64 so you might get yours soon.

Re: 4 upstream channel bonding - post here
 

Here in Leeds went from 2 QAM16 to 4 QAM16.

Re: 4 upstream channel bonding - post here
 

Been getting terrible download speeds the last day or so, so just checked the modem and I've got four upstream channels too. I'd rather have the faster downloads back! Getting a lot of T3 timeouts whatever that is.

East London.

Re: 4 upstream channel bonding - post here
 

Still 3 here but not had any issues up or down, which I guess is why we're still on 3!

Re: 4 upstream channel bonding - post here
 

Yes that sid the job: 4x 16qam now. I last rebooted on Monday/Tuesday so must have happened one day this week.

Re: 4 upstream channel bonding - post here
 

Four channels appeared in the last few days, Coventry CV3. Looking at my TBB quality graph it seems teh conversion was done in the small hours of 7th. June.

No improvement in TBB graph quality.

Re: 4 upstream channel bonding - post here
 

Your upstream levels look on the low side.

Re: 4 upstream channel bonding - post here
 

No obvious effect on performance. I guess levels should be nearer 40.

Here's my downstream Channels 1 - 10 are lower - around 3 or 4 dBmv

Re: 4 upstream channel bonding - post here
 

I think 30 is the magical number but still, I have never seen them that low but as long as everything is working okay there isn't anything to worry about. You might find he lives right next to the cabinet so his modem doesn't need a lot of power to get the signal back to the network.

Re: 4 upstream channel bonding - post here
 

There isn't really a magic upstream number. The way that DOCSIS works is that the upstream power level is never higher than is necessary for the CMTS and the Hub to communicate with each other as determined by the keep-alive traffic.


In Roughie's case, he is close to the cabinet and downstream power levels are therefore high (and upstream low). Although the lower frequency channels are knocking on 10 dBmv, the hot weather will decrease that as the metal expands. That said, it would do no harm to put an attenuator to the back of the hub - say 6 dB.

Re: 4 upstream channel bonding - post here
 

Earlier this year engineers pulled through a new street coax for me because of low power levels that were affecting HD TV. To be certain of good service they put an attenuator in. I'm not sure of the dB value.

Re: 4 upstream channel bonding - post here
 

It could do with further attenuation just to be sure of staying within bounds.

Re: 4 upstream channel bonding - post here
 

SO16 - had an outage yesterday and it's come back on with 4 upstreams:

Upstream
US-1 US-2 US-3 US-4
Channel Type 2.0 2.0 2.0 2.0
Channel ID 40 41 39 38
Frequency (Hz) 25800000 53700000 32600000 39400000
Ranging Status Success Success Success Success
Modulation 64QAM 64QAM 64QAM 64QAM
Symbol Rate 5120000 5120000 5120000 5120000
(Sym/sec)
Mini-Slot Size 2 2 2 2
Power Level 45.50 46.25 45.75 46.25
(dBmV)
T1 Timeouts 0 0 0 0
T2 Timeouts 0 0 0 0
T3 Timeouts 1 0 0 0
T4 Timeouts 0 0 0 0

Superhub 2AC

Paul

Re: 4 upstream channel bonding - post here
 

It has now gone to 1x qam64 and 1x qam32.

Re: 4 upstream channel bonding - post here
 

I had an outage this morning and am now on 4xQAM64.

DS SNR is a bit low tho.

Re: 4 upstream channel bonding - post here
 

Now back to 2x qam64.

I do have concern about my DS SNR as it is around 31-35 and i get alot of pre rs errors and a few post errors on the odd channel now and then, but it doesn't seem to affect my internet but i do have an issue where a few channels on TV i can't get or break up!

So for all the installers here what are my options for fixing the TV channels and bumping up my DS SNR if i am already on the top tap, got a new thicker cable and an HDU-200 installed?

Re: 4 upstream channel bonding - post here
 

What's all this then? Suddenly I have a slot for information on time-outs. This wasn't there until 2 days ago. There was an overnight reboot of SH3 and an instant improvement in the TBB quality graph.

Software version : 9.1.116.608

Re: 4 upstream channel bonding - post here
 

It is one of the firmware improvements.

Re: 4 upstream channel bonding - post here
 

It's the Intel cpu "fix" that appears to prioritise ICMP so graphs look better :)

Re: 4 upstream channel bonding - post here
 

Noticed some red on the TBB yesterday and I rebooted when I got home.
We are now on 4 x 16QAM upstreams. BT27 area.