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COjosh

join:2011-02-21
kudos:1
reply to Action2

Re: [DSL] Low upload speeds on VDSL

Action2- I agree, I originally thought that as wel,l but the modem stats clearly report VDSL 8b mode. It also doesn't have any stats listed for a Line 2 profile either.

Bungle- Provisioning wouldn't change your error problems considering that you "appear" to be UNDER provisioned. If you were OVER provisioned, say too fast for your distance, then you could see higher FEC and CRC rates.

As was stated before- FEC's/CRC's aren't really an issue unless the blocks are so large that they cause the modem to crash and re-train. That doesn't seem to be the issue here.

I would ask for the tech to tell you what your max rates, up and down as well as SNR values, are at the NID and have him contact the MCO to have the upstream corrected to reflect what is going on in real life.

It IS still possible that there is cable trouble causing your errors but that should have NO effect on the modem provisioning.

xDSL modems will run "best effort" algorithms to negotiate the maximum "safe" speed to run at. During the training process the modem "discusses" the current line condition w/ the DSLAM and decides upon the best possible stable speed for the loop condition- Your modem may "train-down" to a lower speed just to stay in sync, but it will NEVER train back up unless there is a forced reboot of the CPE. Being that you showed NO CHANGE in upstream rate after a forced reboot leads me to believe that the provisioning is just plain wrong.

The only case in where the modem would report a lower than advertised upstream profile would be if the DSL port is just set wrong....give or take some strange anomalies that do happen from time to time...

MrBungle87

join:2013-01-18
Durham, NC
Reviews:
·Frontier Communi..
·Time Warner Cable

1 edit
If and when the field tech actually calls or drops by, I'll be sure to get some specific values for max attainable rates and SNR. You mention that the modem may train down to attain sync, and that almost seems like what's been happening over the past few months. Like I said, I started off with an upload sync rate of about 1600Kbps, which has trended downward, almost logarithmically over time.

I should also mention after talking to several managers in other parts of NC, I've been given the impression 2Mbit is the max upload Frontier offers on ANY VDSL plan, which just sounds stupid and unrealistic to me. VDSL/2 can support higher uploads than ADSL2+, and given my distance I would think I'd easily be able to sync at 5Mbit.

Dealing with Frontier is like talking to a hydra where each head thinks something different.

COjosh

join:2011-02-21
kudos:1
Like I said, there is STILL the potential for some form of cable trouble knocking down your upstream rate. If you started off higher, and gradually- key word "GRADUALLY", your upstream rate has dropped off, that would indicate degradation in the OSP or elsewhere.

What modem are you on? An Actiontec or a Zyxel?

But if you abruptly went down then I would still say there is some provisioning snafu going on. Every once in a while DSLAM's will catch an update that screws up custom provisioning...yours may have been caught in that...

Your 1148 upstream rate is well below the necessary provisioning for a 2Meg upload. You would see an upstream rate around 2147 or so if it was set correctly for 2Meg.

I don't disagree that you "should" have higher than 2Meg upload, it's just a question if that is even available to you regardless of what the first manager said.

Frontier RARELY "tweaks" DSLAM line profiles outside of their normal provisioning and 24/2 IS the standard for VDSL in Frontierland. I have seen them make "exceptions" but they are rare at best.

24/1 is indeed weird...I'd like to see how this turns out...

plat2on1

join:2002-08-21
Hopewell Junction, NY
frontier ultra or ultimate, whatever its called was advertised as 25/3 in this area when the website worked(it no longer works , doesn't list any plans and says online ordering not available in this service area) the other two plans were 6/1 and 12/2.

Action2

join:2010-06-29
Newman, IL
kudos:1
Reviews:
·Frontier Communi..
reply to COjosh
As far as I know 24/2 is the common provisioning for the ADSL2+ bonded version of Extreme while 25/3 is the VDSL version.

To me it still looks like he is being provisioned the wrong rate for the upload. 1147 is the rate that the 24/2 bonded plans use per line. In effect being provisioned the ADSL2+ speeds for VDSL.

MrBungle87

join:2013-01-18
Durham, NC
Reviews:
·Frontier Communi..
·Time Warner Cable
reply to COjosh
I'm on the Actiontec V1000W. I think the Zyxels are mostly used for ADSL2 bonded service, if I'm not mistaken.

I'm still on the hook here, though, waiting for a call, but I'll certainly keep you and everyone here apprised of what's going on. And the field manager I'm dealing with here backs up Action2's post that the 2Mbit upload is what's provisioned on bonded ADSL, not VDSL. But if you go through any customer support channels, they refuse to acknowledge they offer higher than 2Mbit upload for anyone on any plan. Something isn't right about that, considering they used to advertise 3Mbit uploads on their Ultra plan.