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Author Topic: INP/Interleave delay vs Speed..!  (Read 1702 times)

mofa2020

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Re: INP/Interleave delay vs Speed..!
« Reply #15 on: January 20, 2020, 03:52:01 PM »

if i may ask where are you from?

I am from Egypt.
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aossama

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Re: INP/Interleave delay vs Speed..!
« Reply #16 on: January 22, 2020, 07:33:03 PM »

So from the screenshots, it seems that you are located in Egypt.  (te)

If I may ask, which area are you located in? And which router are you using?

I changed my line in 2018 to VDSL and my line was performing very well with ds rate ~75Mbps until September. Something went wrong and the rate went down below 28Mbps. Just today I cannot achieve 26Mbps. The attenuation jumped from 11 to 23! How is this even possible?!

Anyways, the profiles pushed to all VDSL lines are interleaved. To my knowledge WE didn't push the fast profiles yet.
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mofa2020

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Re: INP/Interleave delay vs Speed..!
« Reply #17 on: January 22, 2020, 07:48:42 PM »

So from the screenshots, it seems that you are located in Egypt.  (te)

If I may ask, which area are you located in? And which router are you using?

I changed my line in 2018 to VDSL and my line was performing very well with ds rate ~75Mbps until September. Something went wrong and the rate went down below 28Mbps. Just today I cannot achieve 26Mbps. The attenuation jumped from 11 to 23! How is this even possible?!

Anyways, the profiles pushed to all VDSL lines are interleaved. To my knowledge WE didn't push the fast profiles yet.

I am from Alexandria, and the router is ZTE H168N but with unlocked firmware and yes no fast profiles are available yet. can you post the line stats? but for the attenuation to jump from 11 to 23 this means that something wrong happened to the phone line either in box under building or at the cabinet, if you are with WE call 111 and make a complaint about the speed drop and increased attenuation they will make someone to check it.
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aossama

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Re: INP/Interleave delay vs Speed..!
« Reply #18 on: January 22, 2020, 07:58:33 PM »

Located in Cairo (Mokattam). Already politely bugging them almost every week since the fault started. The technicians are saying something is wrong with the line grounding, they are very secretive about it (like everything in the country   ;)).

I recently (20 days ago) raised a ticket complaining from a high noise on the voice channel. It hasn't been fixed till now.

Below are the line stats as reported by dslstats. I have the tp-link Archer VR400v2. Which I didn't like for now showing stats, but after hacking it, I was able to get dslstats to report everything about the line.

Stats summary
Stats recorded 22 Jan 2020 21:54:05

DSLAM type / SW version:   HISI:0x3412 (52.18) / v0x3412
Modem/router firmware:     AnnexA version - A2pv6F039v2.d26m
DSL mode:                  VDSL2 Profile 17a
Status:                    Showtime
Uptime:                     1 hour 5 min 34 sec
Resyncs:                   3 (since 22 Jan 2020 18:04:18)
         
            Downstream   Upstream
Line attenuation (dB):     27.7      0.0
Signal attenuation (dB):   Not available on VDSL2      
Connection speed (kbps):   33099      10014
SNR margin (dB):           4.4      7.2
Power (dBm):               14.2      8.8
Interleave depth:          279      89
INP:                       2.00      2.00
G.INP:                     Not enabled      Not enabled
Vectoring status:          5 (VECT_UNCONFIGURED)      

RSCorr/RS (%):             0.0545      0.0032
RSUnCorr/RS (%):           0.0009      0.0000
ES/hour:                   12.6      11.0
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aossama

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Re: INP/Interleave delay vs Speed..!
« Reply #19 on: January 22, 2020, 08:08:11 PM »

Another weird thing also reported:


xdslctl info --stats
xdslctl: ADSL driver and PHY status
Status: Showtime
Last Retrain Reason:    1
Last initialization procedure status:   0
Max:    Upstream rate = 12420 Kbps, Downstream rate = 28607 Kbps
Bearer: 0, Upstream rate = 10014 Kbps, Downstream rate = 33099 Kbps


Link Power State:       L0
Mode:                   VDSL2 Annex B
VDSL2 Profile:          Profile 17a
TPS-TC:                 PTM Mode(0x1)
Trellis:                U:ON /D:ON
Line Status:            No Defect
Training Status:        Showtime
                Down            Up
SNR (dB):        4.4             7.2
Attn(dB):        27.7            0.0
Pwr(dBm):        14.2            8.8

                        VDSL2 framing
                        Bearer 0
MSGc:           19              25
B:              237             124
M:              1               1
T:              64              64
R:              16              16
S:              0.2288          0.3963
L:              8880            2846
D:              279             89
I:              254             141
N:              254             141


How could the max be less than the current?
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mofa2020

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Re: INP/Interleave delay vs Speed..!
« Reply #20 on: January 22, 2020, 08:19:54 PM »

HISI DSLAM? any kitzen could help with that!! anyway 3 resync. I believe that SNR 4 is really bad that is the cause it resync. so I believe you are WE Space, do have any of its routers? I have the VR400 v2 and the ZTE h168n but the ZTE is much better, did you try any other router? also check with neighbor about the connection see if it is a problem in your area/cabinet.
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burakkucat

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Re: INP/Interleave delay vs Speed..!
« Reply #21 on: January 22, 2020, 08:27:18 PM »

How could the max be less than the current?

The "max" line is just an intelligent guess, a prediction, as to how the circuit could perform, if everything was as it should be, which includes a target SNRM of 6 dB.

In your case, we can see that the SNRM was 4.4 dB when those statistics were obtained. That would be enough to push the actual DS rate above that of the predicted max DS rate.
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mofa2020

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Re: INP/Interleave delay vs Speed..!
« Reply #22 on: January 22, 2020, 09:03:21 PM »

If you have the ticket number call 155 and make a complaint, that is the last thing you can do.... or as I told you check with others in your area if the thing is common take a group of you and visit the nearest branch with technical support or visit the central and meet someone from administration maybe it an issue with a main cable for the area.
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mofa2020

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Re: INP/Interleave delay vs Speed..!
« Reply #23 on: January 22, 2020, 09:13:32 PM »

May I ask how did you hack the vr400? because it is a pain in the .....!!
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aossama

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Re: INP/Interleave delay vs Speed..!
« Reply #24 on: January 23, 2020, 07:13:30 AM »

I will raise a complaint on 155 as soon as I land in Cairo.

For hacking the VR400, I followed the same instructions for the Archer VR600 detailed here:

https://forum.kitz.co.uk/index.php/topic,14377.msg357441.html#msg357441
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Digital

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Re: INP/Interleave delay vs Speed..!
« Reply #25 on: February 10, 2020, 12:30:36 AM »

Mode:                   VDSL2 Annex B

vr400 supports vdsl annex A only, how is it showing annex B?

edit:please see this post
https://community.talktalk.co.uk/t5/Product-Archive/Annex-A-or-B-with-FTTC-fibre/m-p/1213937#M810355
could be your cabinet supports annex B and your router supports only annex A, that whats causing your issues, try getting a router that supports annex b to test
« Last Edit: February 10, 2020, 04:10:23 PM by Digital »
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mofa2020

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Re: INP/Interleave delay vs Speed..!
« Reply #26 on: February 13, 2020, 10:05:12 AM »

Some routers for some reason reports Annex A as Annex B so it is basically a router thing but it will work normal either way.
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burakkucat

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Re: INP/Interleave delay vs Speed..!
« Reply #27 on: February 13, 2020, 05:07:05 PM »

We have to remember that there are annexes to various standards and recommendations that apply to xDSL hardware and xDSL services.

The first annex to consider is that at the hardware level, which specifies the underlying telephony service (if any). Here Annex A signifies xDSL over POTS and Annex B signifies xDSL over ISDN. In the U.K. it is Annex A. In Germany it is Annex B.

Then there is the annex of a VDSL2 service's software configuration, for example. In the U.K. it is Annex B.

The above, considerably simplified, is what usually causes confusion for users of a U.K. based VDSL2 service.
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mofa2020

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Re: INP/Interleave delay vs Speed..!
« Reply #28 on: February 18, 2020, 11:23:57 PM »

So I ended up with D-link dsl-2888a which uses Triductor vspm340 (as I believe) line is stable with these stats:

 xdsl_cli info --status
Mode:                           Vdsl2_ANNEX_B
State:                          Showtime
Power state:                    1
Data path:                      Interleaved
Downstream max rate:            142704
Upstream max rate:              35621
Downstream current rate:        35999
Upstream current rate:          4015
Downstream power:               144
Upstream power:                 5
Downstream attenuation:         32
Upstream attenuation:           5
Downstream SignalAttn:          1023
Upstream SignalAttn:            1023
Downstream SNR margin:          288
Upstream SNR margin:            392
Downstream line coding:         1
Upstream line coding:           1
UpBokle:                        43
Downstream Trellis:             1
Upstream Trellis:               1
Downstream Actual SNRMode:      1
Upstream Actual SNRMode:        1
ActualCE:                       5
Downstream SNRMpb:              -153.6,921.7,1049.7,25.4,25.4
Upstream SNRMpb:                25.4,-2867.1,-3199.9,25.4,0.0
TotalStart:                     3454
STStart:                        3418
AturVendor:                     54524944
AturCountry:                    b500
AtucVendor:                     48495349
AtucCountry:                    3412
DownstreamInterleaveDepth:      1799
UpstreamInterleaveDepth:        41
Profile:                        17a
Upstream INP:                   0.00
Downstream INP:                 0.00
Upstream Interleave Delay:      5
Downstream Interleave Delay:    12
Downstream Data Path:           Interleaved
Upstream Data Path:             Interleaved


xdsl_cli info --stats
Total time = 50 min 11 sec
FEC:            0               0
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            35              35
LOS:            0               0
LOF:            0               0
Latest 15 minutes time = 5 min 11 sec
FEC:            0               0
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
Previous 15 minutes time = 15 min 0 sec
FEC:            0               0
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
Latest 1 day time = 50 min 11 sec
FEC:            0               0
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            35              35
LOS:            0               0
LOF:            0               0
Previous 1 day time = 24 hours 0 sec
FEC:            0               0
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
Since Link time = 49 min 35 sec
FEC:            0               0
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0

with *Total time = 50 min 11 sec
UAS             35            35

it is just before the line sync. every time it shows 35 but since link time is 0, I believe things are stable though I will try faster plan and see how things go..
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burakkucat

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Re: INP/Interleave delay vs Speed..!
« Reply #29 on: February 18, 2020, 11:40:28 PM »

with *Total time = 50 min 11 sec
UAS             35            35

it is just before the line sync. every time it shows 35 . . .

Yes, agreed.

With a ZyXEL VMG1312-B10A I see --

UAS:      59      59

It is only seen directly after a power-on, whilst the device is initialising, and can be ignored as it is not service affecting.
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