Topic 'Re: Cable Modem Upload 5 channels. Is the 5th channel new?' in forum 'Cox' - dslreports.com

Re: Cable Modem Upload 5 channels. Is the 5th channel new?

Tue, 19 May 2020 12:04:16 EDT

Fubar posted :

said by dvd536:

said by Fubar:

said by JTS33:

I had the 5th channel at the same time as this was posted here, but now the 5th channel is gone and back to 4 channels.

How high is your upstream power? Have you rebooted?

Still have a ll 5 here.

still have all 5 but i noticed one has been cut in half.
12.9mhz is down to 2.56 from 5.12

That is how it is for everyone.
They do not have room for 5 6mhz carriers so one is 3.2 mhz wide instead.

Re: Cable Modem Upload 5 channels. Is the 5th channel new?

Tue, 19 May 2020 11:19:12 EDT

dvd536 posted :

said by Fubar:

said by JTS33:

I had the 5th channel at the same time as this was posted here, but now the 5th channel is gone and back to 4 channels.

How high is your upstream power? Have you rebooted?

Still have a ll 5 here.

still have all 5 but i noticed one has been cut in half.
12.9mhz is down to 2.56 from 5.12

Re: Cable Modem Upload 5 channels. Is the 5th channel new?

Tue, 19 May 2020 11:16:08 EDT

dvd536 posted : ideal upstream is 38 to 45dbmv

Re: Cable Modem Upload 5 channels. Is the 5th channel new?

Mon, 18 May 2020 17:28:04 EDT

Luke_ posted : Upstream does have a minimum...it depends on the modulation. I think a 6.4 wide atdma is a minimum of 23. Anything below that won’t sync. A 3.2 wide carrier is 20 dBmV minimum.

You are right, low transmits will work fine, but depends how clean the node’s noise floor is. Apparently low transmits do have some kind of effect on the adaptive equalization at the ccap, but I havnt seen anything personally that would have a noticable impact on the end user side

Re: Cable Modem Upload 5 channels. Is the 5th channel new?

Mon, 18 May 2020 17:11:20 EDT

Maltz posted :

said by JTS33:

Upstream power went from 42dBmV to 33dBmV. My understanding is you don't want to be below 35dBmV? Or rather, in the 35-52dBmV range?

Generally speaking, upstream only has a maximum, not a minimum really. It's negotiated with the CMTS, but the modem can only yell so loud. :) In any case, don't try to raise it with splitters, attenuators, etc. The modem will simply compensate, so the signals on the modem's web page will appear higher, but the signal strength leaving your house will be unchanged.

I've heard of upstream in the 20's working fine. Mine was in the low-to-mid 30's for a long time with no issues as well.

Re: Cable Modem Upload 5 channels. Is the 5th channel new?

Mon, 18 May 2020 15:41:49 EDT

JTS33 posted : Upstream power went from 42dBmV to 33dBmV. My understanding is you don't want to be below 35dBmV? Or rather, in the 35-52dBmV range?

Re: Cable Modem Upload 5 channels. Is the 5th channel new?

Fri, 15 May 2020 22:02:56 EDT

Fubar posted :

said by JTS33:

I had the 5th channel at the same time as this was posted here, but now the 5th channel is gone and back to 4 channels.

How high is your upstream power? Have you rebooted?

Still have a ll 5 here.

Re: Cable Modem Upload 5 channels. Is the 5th channel new?

Fri, 15 May 2020 14:08:00 EDT

JTS33 posted : I had the 5th channel at the same time as this was posted here, but now the 5th channel is gone and back to 4 channels.

Re: Cable Modem Upload 5 channels. Is the 5th channel new?

Thu, 07 May 2020 16:34:02 EDT

taffeys posted :

said by Freak0:

I got the 5th channel when I upgraded to Gbit about a month ago after complaining of uncorrectables and choppiness using VOIP. What plan are you on in Oceanside?

Preferred 150

Re: Cable Modem Upload 5 channels. Is the 5th channel new?

Thu, 07 May 2020 14:15:20 EDT

Freak0 posted : I got the 5th channel when I upgraded to Gbit about a month ago after complaining of uncorrectables and choppiness using VOIP. What plan are you on in Oceanside?

Re: Cable Modem Upload 5 channels. Is the 5th channel new?

Wed, 06 May 2020 21:27:22 EDT

taffeys posted : Just showed up in Oceanside, CA today. So far it doesn't seem to make any difference.

Re: Cable Modem Upload 5 channels. Is the 5th channel new?

Wed, 06 May 2020 11:33:28 EDT

Maltz posted : A reboot might make the modem notice it a few hours sooner, though, for the chronically impatient. :)

Re: Cable Modem Upload 5 channels. Is the 5th channel new?

Tue, 05 May 2020 23:16:07 EDT

Fubar posted :

said by Anonac626 :

I'll try a modem reboot tomorrow, but as of now, still no 5th channel in Parma near State and Sprague area. Only 4 channels on my SB8200.

They are going in order of congested nodes.

And a modem reboot is not needed.

I got my 5th channel about 10 days ago,
Yet my uptime still shows
System Uptime: 41 d: 3 h: 34 m

Re: Cable Modem Upload 5 channels. Is the 5th channel new?

Tue, 05 May 2020 22:17:24 EDT

anon posted : I'll try a modem reboot tomorrow, but as of now, still no 5th channel in Parma near State and Sprague area. Only 4 channels on my SB8200.

Re: Cable Modem Upload 5 channels. Is the 5th channel new?

Tue, 05 May 2020 16:29:40 EDT

budevans3 posted : Look again. I see the 5th upload channel.

Re: Cable Modem Upload 5 channels. Is the 5th channel new?

Wed, 29 Apr 2020 21:29:57 EDT

nysports4evr posted :

said by mgtylerfalc:

Yeah, looks like we are on the same CMTS but then you're routed differently to different nodes than me. Weird. At 6:30 my jitter was pretty bad with intermittent PL but the loss wasn't constant. Looks like you're a lot more stable than me which is weird because multiple techs cleared my house of any signal issues. We definitely live in the same immediate area though which is weird, your route seems to be much more stable.

Have you power cycled your modem recently?

Not recently. 27 days 16h:31m:14s uptime.

Re: Cable Modem Upload 5 channels. Is the 5th channel new?

Wed, 29 Apr 2020 12:02:11 EDT

dvd536 posted :

said by Luke_:

Yup! The new channel is the 3.2 wide 12.8 MHz one as you thought and rollout started about 2 weeks ago All US frequencies were shifted around a bit to make it fit. Its to help with utilization

Edit: Should have stated the actual center frequency depends on market.... Phx is 12.9 MHz

We're 5 channels up but only 5.12 wide and D2.0 QAM64

Re: Cable Modem Upload 5 channels. Is the 5th channel new?

Mon, 27 Apr 2020 23:29:30 EDT

anon posted : Still no 5th Upload channel in Cleveland area even after full power cycle.

Re: Cable Modem Upload 5 channels. Is the 5th channel new?

Mon, 27 Apr 2020 17:57:34 EDT

anon posted : Ok, fiber. Have and stuck on old fashion coax.

Re: Cable Modem Upload 5 channels. Is the 5th channel new?

Sun, 26 Apr 2020 23:05:03 EDT

nickphx posted : no jitter or loss. i had one outage with the fiber service due to maintenance..

Re: Cable Modem Upload 5 channels. Is the 5th channel new?

Fri, 24 Apr 2020 16:11:45 EDT

anon posted : Define solid. Next door in Glendale during the day and evenings speeds latency jitter have been all over the place. Wife can still work from home somehow. Maybe should get CenturyLink even if slower speeds.. loser cost and no caps anytime. Cox is money hungry and builds it out just enough.

Re: Cable Modem Upload 5 channels. Is the 5th channel new?

Fri, 24 Apr 2020 13:56:20 EDT

Timppa posted : My long experience of frustrations with Cox (and to a lesser extent other HFC providers) suggests your packet loss issue has nothing to do with congestion and everything to do with noise on the cable plant in the return path (i.e., 5 to 42MHz)

Even in the primitive days of DOCSIS 2.0 providers were generally able to keep ping times consistent on congested nodes by using QoS. I remember when my provider was so congested I couldn't break 1Mbps on speed tests during peak hours but ping times never wavered from baseline.

YMMV.

Re: Cable Modem Upload 5 channels. Is the 5th channel new?

Fri, 24 Apr 2020 01:57:27 EDT

mgtylerfalc posted : Yeah, looks like we are on the same CMTS but then you're routed differently to different nodes than me. Weird. At 6:30 my jitter was pretty bad with intermittent PL but the loss wasn't constant. Looks like you're a lot more stable than me which is weird because multiple techs cleared my house of any signal issues. We definitely live in the same immediate area though which is weird, your route seems to be much more stable.

Have you power cycled your modem recently?

Re: Cable Modem Upload 5 channels. Is the 5th channel new?

Fri, 24 Apr 2020 01:31:41 EDT

billaustin posted : I have not had any issues, but I'm also on a Business connection on a node that is not heavily utilized.

Re: Cable Modem Upload 5 channels. Is the 5th channel new?

Thu, 23 Apr 2020 23:39:45 EDT

nickphx posted : it's been solid for me in Phoenix.

Re: Cable Modem Upload 5 channels. Is the 5th channel new?

Thu, 23 Apr 2020 21:36:29 EDT

nysports4evr posted : These are my pingplotter results over 10 mins at around 6:30 PM. Maybe my node is just less congested than yours. I am also on a 16x4 modem so only have 4 upstream channels. (17.6, 24, 30.4 & 36.8 MHz)

Re: Cable Modem Upload 5 channels. Is the 5th channel new?

Thu, 23 Apr 2020 20:50:04 EDT

Dirty Steve posted :

said by billaustin:

They built it to accommodate typical use patterns, Business use downtown during the day and Residential use at night in the suburbs.

There's *many* examples of Cox not even doing that. The virus brought more attention to that, than attention to the virus. Cox should be held to a higher standard. Not normalized.

Re: Cable Modem Upload 5 channels. Is the 5th channel new?

Thu, 23 Apr 2020 20:41:52 EDT

billaustin posted :

said by Dirty Steve:

said by billaustin:

I would think that's to be expected, with all the people working from home, and all the others who are home with nothing else to do. The Cox network was not intended for the heavy use it has been receiving.

....
This is a crooked company. There's no reason to sugarcoat it.

I never said they are not. They are taking advantage of the system to make the most money they can. Cox never intended for their network to function under the heavy use it has been receiving. They built it to accommodate typical use patterns, Business use downtown during the day and Residential use at night in the suburbs.

Re: Cable Modem Upload 5 channels. Is the 5th channel new?

Thu, 23 Apr 2020 20:18:11 EDT

Dirty Steve posted :

said by billaustin:

I think everyone can understand that these are exceptional times. But, the way Cox is essentially a monopoly in most areas, *entirely* upon public rights of ways & easements, shouldn't we expect more? We're not talking about Kroger being under great stress (while maintaining competitiveness with Walmart, Target, Safeway, etl.al.).

Is the recent state of emergency a reason to excuse Cox? Or, shine a light on how something so essential to *existence* is treated like a used car lot by a private company without even the benefit of public ownership via stock (and the resulting reporting requirements).

Big Media is going gaga about Kimberly-Clark's response to the toilet-paper shortage. And, Justin Beiber got clapped at because he said something insensitive. Some influencer even took a photo of herself without makeup. But, Cox doesn't even rise to a topic? What has Cox (and Comcast) been doing all these decades? Where's the money been going? They virtue signaled that overage fees would be waived for 60 days (implying 2 months), but overage subscriptions were only waived for one month (because two months would never be 60 days -- until next January.).

This is a crooked company. There's no reason to sugarcoat it.

Re: Cable Modem Upload 5 channels. Is the 5th channel new?

Thu, 23 Apr 2020 19:44:05 EDT

billaustin posted : I would think that's to be expected, with all the people working from home, and all the others who are home with nothing else to do. The Cox network was not intended for the heavy use it has been receiving.

Re: Cable Modem Upload 5 channels. Is the 5th channel new?

Thu, 23 Apr 2020 18:58:30 EDT

mgtylerfalc posted : It has gotten a little better but it's mostly 10am-8pm and then usage dies down and it gets decently stable. Still seeing periods of 30% loss about 3-5x a day during those hours.

Re: Cable Modem Upload 5 channels. Is the 5th channel new?

Wed, 22 Apr 2020 01:48:38 EDT

nysports4evr posted :

said by mgtylerfalc:

I'll be interested to see if it cuts down on the constant 40% loss during the weekday.

I'm in Aliso as well (presumably on the same CMTS based on your trace) and it seems to have been getting better lately for me, but still pretty bad at certain times. Doesn't seem to be consistent. What times of day are you typically seeing this?

Re: Cable Modem Upload 5 channels. Is the 5th channel new?

Wed, 22 Apr 2020 01:23:36 EDT

DigitalHype posted : When the loss and latency starts at the CCAP (1st hop) and continues, the issue isn't backbone, peering or transit.

Re: Cable Modem Upload 5 channels. Is the 5th channel new?

Tue, 21 Apr 2020 21:24:47 EDT

motorola870 posted : why would it not be? Google has had congestion issues knocking out their cloud services taking down several websites and apps. Yes the nodes are congested in a lot of cases but it isn't always last mile. My Charter area has had a routing issue upstream from the node for months affecting twitch, nintendo online and a few other services. Locals are thinking it is either throttling or something at the local backbone that is doing it because it has been affecting multiple players in different cities.

Re: Cable Modem Upload 5 channels. Is the 5th channel new?

Tue, 21 Apr 2020 19:58:59 EDT

Maltz posted :

said by motorola870:

these graphs and packet loss mentions are meaningless if it is on the main backbone not at the node level.

That seems super unlikely. Any connections upstream of the CMTS would be full-duplex and symmetric, and a lot of this packet loss is visible even to the CMTS.

I've seen a some extra server lag (but not network latency) to Blizzard games, for example, but I think any network effects, such as packet loss, is very likely to be on the coax segment. It's by far the weakest link, especially as people use more upstream with video conferencing, VPN to file shares, etc.

Re: Cable Modem Upload 5 channels. Is the 5th channel new?

Tue, 21 Apr 2020 17:36:24 EDT

motorola870 posted : these graphs and packet loss mentions are meaningless if it is on the main backbone not at the node level. Adding a 5th upstream adding capacity isn't going to fix a transport level issue between the provider and T1 backbone providers they connect to. Gaming service providers are also taxed so don't even blame Cox for all of it. People going online to play games from home has had increased demand too.

Re: Cable Modem Upload 5 channels. Is the 5th channel new?

Mon, 20 Apr 2020 16:19:15 EDT

mgtylerfalc posted : Still seeing 35% packetloss during prime work hours. This band-aid falls way short.

Re: Cable Modem Upload 5 channels. Is the 5th channel new?

Mon, 20 Apr 2020 08:24:09 EDT

anon posted : Doesn't exist in Parma, Ohio either, yet.

Re: Cable Modem Upload 5 channels. Is the 5th channel new?

Sun, 19 Apr 2020 22:16:55 EDT

gogydm posted : Interesting how here in RSM we don't have a fifth channel yet. At least my CGM4140COM (Cox provided Panoramic Wifi) has not found it even after a reboot.

Re: Cable Modem Upload 5 channels. Is the 5th channel new?

Sun, 19 Apr 2020 01:03:23 EDT

mgtylerfalc posted : I checked my modem too, I have the extra upstream channel. It's not enough to handle primetime. It's fine that they're doing a stop gap but people probably still won't be able to game. They can stream frozen though. Maybe if they added more than just 9Mbps of extra upstream.

I'll be interested to see if it cuts down on the constant 40% loss during the weekday.

Re: Cable Modem Upload 5 channels. Is the 5th channel new?

Sat, 18 Apr 2020 17:00:40 EDT

motorola870 posted :

said by Luke_:

Yup! The new channel is the 3.2 wide 12.8 MHz one as you thought and rollout started about 2 weeks ago All US frequencies were shifted around a bit to make it fit. Its to help with utilization

Interesting Cox is doing it like Comcast is. Did they save room to do a TaFDM Overlay for OFDMA? I am also curious where they put the legacy return path for legacy boxes and cable card devices that have a SDV tuning adapter. Charter has a similar setup with this upstream configuration in some systems except for the 5th channel. Not sure if a lot of providers are standardizing to similar band plans on the upstream or they are all finding these plans the most feasible. My Charter area has 17.8MHz, 24.2MHz 30.6MHz, 37MHz all are 6.4MHz 5120 Ksym ATDMA QAM64. I have seen some people post it with the 36.8MHz as the top center carrier with the 3 others offset .2MHz lower than my area. Only thing i could think of is they are having rolloff issues in the systems that are 5-40MHz return compared to 5-42MHz.

Re: Cable Modem Upload 5 channels. Is the 5th channel new?

Sat, 18 Apr 2020 16:12:51 EDT

Luke_ posted : It could if utilization is the issue. If its an RF issue causing it or an issue on the other side you are trying to video call with, then no

Re: Cable Modem Upload 5 channels. Is the 5th channel new?

Sat, 18 Apr 2020 16:10:56 EDT

bakercard posted : Should that help with ping latency and packet loss? I've been getting that every single day making my video calls difficult to do.

Re: Cable Modem Upload 5 channels. Is the 5th channel new?

Sat, 18 Apr 2020 16:05:04 EDT

Luke_ posted : Yup! The new channel is the 3.2 wide 12.8 MHz one as you thought and rollout started about 2 weeks ago All US frequencies were shifted around a bit to make it fit. Its to help with utilization

Edit: Should have stated the actual center frequency depends on market.... Phx is 12.9 MHz

Cable Modem Upload 5 channels. Is the 5th channel new?

Sat, 18 Apr 2020 16:03:33 EDT

bakercard posted : I have 5 upload channels on my modem. Is the 5th one new?