Kitz ADSL Broadband Information
adsl spacer  
Support this site
Home Broadband ISPs Tech Routers Wiki Forum
 
     
   Compare ISP   Rate your ISP
 
Please login or register.

Login with username, password and session length
Advanced search  

News:

Pages: 1 [2]

Author Topic: FTTC DLM Caution Counter Resets  (Read 767 times)

Ixel

  • Reg Member
  • ***
  • Posts: 709
Re: FTTC DLM Caution Counter Resets
« Reply #15 on: November 11, 2017, 09:40:49 AM »

btw whilst at the OR site also saw this...  which Im not sure if I like the look of.

https://www.openreach.co.uk/orpg/home/updates/briefings/super-fastfibreaccessbriefings/super-fastfibreaccessbriefingsarticles/nga03817.do

Could be an end to the Open Profile and straight to Interleave for all.   Not so much of a problem for Huawei's who then move on to G.INP.
However ECI cabs in some respects are currently immune to the Interleave by default.  It can be a PITA getting rid of INP as it is, so I can forsee that a lot of lines that normally would run quite well on ILQ amber without INP, having problems getting INP removed.

I'm not sure whether I do like it, because if a new line was behaving pretty badly DLM could (and would) immediately over-ride open profile.   Supposedly its because of complaints during the Open phase..  but seriously???  Most of the large ISPs resort to telling the EU it will settle in 10 days and still use the 'training phase' even though its not strictly true.   The line is at most on Open for 48hrs so someone would have to be pretty quick off the mark to think that an engineer would be there before DLM has kicked in on its own anyhow.  :-\

Yeah this was posted on ISPreview recently, I also mentioned it in another thread in the news section here. I'm fearful it might mean interleaving by default and no more fastpath. If it's interleaving I really hope it's something lighter than INP 3 and delay 8ms (e.g. INP 2 perhaps, like it was before G.INP rolled out in whatever part Eircom manages in Ireland). On the other hand it might mean something different, it might mean Reed Solomon Coding on downstream by default. Right now the Broadcom devices negotiate with an R value of 0 on downstream if fastpath, where Infineon/Lantiq devices seem to negotiate with an R of 16 (at least on ECI DSLAM's). Maybe their intention is to have an R value greater than 0 on the downstream by default like it is for upstream. I don't mind that.

If however interleaving, like INP 3 delay 8ms, is used by default then it's just going to mask many line faults and make it that much harder for Openreach to admit and agree that there's a problem. I really hope this is not the case as I'd miss my current 5.5 to 6.0 ms ping on the new TalkTalk backhaul (trialling) via AAISP to YouTube.

I am already suspicious of interleaving being the default on ECI cabs now. I have had a huge amount of trouble getting it removed only for DLM to put it back almost immediately and not remove it at all. I know my line can run well at amber ILQ and when G.INP was available on ECI my line ran exceptionally well at around 70000kbps, now the best I get is around  61000kbps with interleaving and exceptionally low error rates only just making double figure ES in 24 hours but DLM stubbornly refusing to remove interleaving.

Stuart

Try capping it at 54 on the ds. Worked for me. 8 days to get rid of it after waiting 5 weeks. I removed the cap after the removal and still on fast path with no issue.

This helped me recently too I believe. I bumped up the SNRM target offset on my DrayTek to initially +3.0 dB and then +5.0 dB (maximum allowed) and I'm now fastpath :).

If I'm running with barely 10-20 or so ES/day I dont see how reducing the speed will get DLM to do anything. My line is unquestionably running very well in terms of very low error rates and DLM wont do anything. Just seems pointless to me unless anyone else can give me an explanation as to why DLM might intervene, so I dont intend to try it until I have an explanation as to why it might work.

Stuart

We don't know for sure but FEC errors might also be taken into consideration, are they low?
Logged

Chrysalis

  • Content Team
  • Kitizen
  • *
  • Posts: 4988
Re: FTTC DLM Caution Counter Resets
« Reply #16 on: November 11, 2017, 09:55:23 AM »

its also possible they will interleave by default but still allow lines to be moved to fast path, so keeping fast path as a profile just not as default
Logged
Sky Fiber Pro - Billion 8800NL bridge & PFSense BOX running PFSense 2.4 - ECI Cab

adslmax

  • Reg Member
  • ***
  • Posts: 438
Re: FTTC DLM Caution Counter Resets
« Reply #17 on: November 13, 2017, 09:25:25 PM »

That's good to hear it. Now, I want to let PN know of doing this DLM reset!
Logged

kitz

  • Administrator
  • Senior Kitizen
  • *
  • Posts: 30340
  • Trinity: Most guys do.
    • http://www.kitz.co.uk
Re: FTTC DLM Caution Counter Resets
« Reply #18 on: November 13, 2017, 09:59:19 PM »

As I said elsewhere - Plusnet cant yet.

This is currently an interim solution for GEA FTTC and as such is not currently available to all ISPs at the present time.

Plusnet arent one of those who can request it yet on the new system (neither are BTr come to that).
Logged
Please do not PM me with queries for broadband help as I may not be able to respond.
-----
How to get your router line stats :: ADSL Exchange Checker

adslmax

  • Reg Member
  • ***
  • Posts: 438
Re: FTTC DLM Caution Counter Resets
« Reply #19 on: November 13, 2017, 10:02:01 PM »

That's because PN and BT are too cheap marketing! They proud to be but in my view, they unproud to be. PN is going downhill. I probably consider switch to other isp soon. But who?
Logged

kitz

  • Administrator
  • Senior Kitizen
  • *
  • Posts: 30340
  • Trinity: Most guys do.
    • http://www.kitz.co.uk
Re: FTTC DLM Caution Counter Resets
« Reply #20 on: November 13, 2017, 10:07:41 PM »

Quote
That's because PN and BT are too cheap marketing!

NO!  Absolutely nothing to do with that at all.



----
Imagine a different scenario.
One whereby only BT customers had the ability to get a DLM reset from Openreach.   
Now think who would be screaming hardest.
Logged
Please do not PM me with queries for broadband help as I may not be able to respond.
-----
How to get your router line stats :: ADSL Exchange Checker

burakkucat

  • Global Moderator
  • Senior Kitizen
  • *
  • Posts: 20161
  • Over the Rainbow
    • The ELRepo Project
Re: FTTC DLM Caution Counter Resets
« Reply #21 on: November 13, 2017, 10:12:08 PM »

I probably consider switch to other isp soon. But who?

If you want the best, I'll suggest Andrews and Arnold.
Logged
:cat:  100% Linux and, previously, Unix. Co-founder of the ELRepo Project.

Please consider making a donation to support the running of this site.
Pages: 1 [2]