General 4 upstream channel bonding - post here - Page 6

rhooton · 06-06-2018, 21:59

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

Inactive Digital · 06-06-2018, 22:43

Quote:

Originally Posted by Jon22

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

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

SnoopZ · 07-06-2018, 11:15

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.

Jon22 · 07-06-2018, 12:38

Quote:

Originally Posted by Inactive Digital

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

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.

ccarmock · 07-06-2018, 20:22

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.

JordanTheToaster · 07-06-2018, 21:33

Quote:

Originally Posted by ccarmock

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.

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

raging bull · 08-06-2018, 05:42

Here in Leeds went from 2 QAM16 to 4 QAM16.

Horizon · 08-06-2018, 16:46

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.

Synthetic · 08-06-2018, 20:45

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

Inactive Digital · 08-06-2018, 22:11

Quote:

Originally Posted by Jon22

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.

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

roughbeast · 10-06-2018, 12:16

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.

SnoopZ · 10-06-2018, 12:31

Quote:

Originally Posted by roughbeast

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.

Your upstream levels look on the low side.

roughbeast · 10-06-2018, 14:25

Quote:

Originally Posted by SnoopZ

Your upstream levels look on the low side.

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

General Maximus · 10-06-2018, 16:50

Quote:

Originally Posted by SnoopZ

Your upstream levels look on the low side.

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.

Sephiroth · 10-06-2018, 17:13

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.