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[adslmax]

I have decided to power down the modem and leave it off for today. Something are not right as downstream ES and SES has gone shoot up pretty fast!

[adslmax]

Got modem back on after three hours powered down.

The ES and SES has suddenly stopped now and downstream SNR are spot on now.

Ran throughput speed only getting 70Meg (BTw speedtester say IP Profile on your line is 73.59Mbps? Use to be 77.35Mbps.

Stats recorded 21 Jun 2019 11:54:28

DSLAM type / SW version:   BDCM:0xa48c (164.140) / v0xa48c
Modem/router firmware:     AnnexA version - A2pv6F039g1.d24m
DSL mode:                  VDSL2 Profile 17a
Status:                    Showtime
Uptime:                     0 hour 22 min 40 sec
Resyncs:                   0 (since 21 Jun 2019 11:41:45)
         
            Downstream   Upstream
Line attenuation (dB):     11.8      0.0
Signal attenuation (dB):   Not available on VDSL2      
Connection speed (kbps):   79999      19000
SNR margin (dB):           7.8      10.0
Power (dBm):               12.5      0.6
Interleave depth:          16      2
INP:                       46.00      56.00
G.INP:                     Enabled      Enabled
Vectoring status:          5 (VECT_UNCONFIGURED)      

RSCorr/RS (%):             1.9017      2.0661
RSUnCorr/RS (%):           0.0000      0.0000
ES/hour:                   0      0

adsl info --stats
adsl: ADSL driver and PHY status
Status: Showtime
Last Retrain Reason:    0
Last initialization procedure status:   0
Max:    Upstream rate = 22964 Kbps, Downstream rate = 89996 Kbps
Bearer: 0, Upstream rate = 19000 Kbps, Downstream rate = 79999 Kbps
Bearer: 1, Upstream rate = 0 Kbps, Downstream rate = 0 Kbps
Link Power State:       L0
Mode:                   VDSL2 Annex B
VDSL2 Profile:          Profile 17a
TPS-TC:                 PTM Mode(0x0)
Trellis:                U:ON /D:ON
Line Status:            No Defect
Training Status:        Showtime
                Down            Up
SNR (dB):        7.8             10.0
Attn(dB):        11.8            0.0
Pwr(dBm):        12.5            0.6

Downstream      Upstream
General
   rtx_tx             9918538            33             
   rtx_c              1077               10517073       
   rtx_uc             0                  1591862         
   LEFTRS             26                 20408           
   minEFTR            79982              18996           
   errFreeBits        1706699            638601467       
Bearer 0
   RxQueue            57                 130             
   TxQueue            19                 26             
   G.INP Framing      18                 18             
   G.INP Lookback     19                 26             
   RRC Bits           24                 24             
   Interleave depth   16                 2               
   INP                46.00              56.00           
   INPRein            1.00               1.00           
   Delay              0                  0               
Bearer 1
   Interleave depth   3                  1               
   INP                4.00               4.00           
   INPRein            4.00               4.00           
   Delay              3                  0               

Since Link time = 22 min 59 sec
FEC:            2008882         58407
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
 >

[adslmax]

Updated: Still ES and SES zero after 7 hours stable connected When I was powered down the modem I can see red light at the end right side that probably caused lots of ES SES few days ago might caused this. The red light has gone off when I powered it back on this morning. Maybe Billion Modem is getting wearing out? Maybe time to buy new Broadcom chipset modem that work with dslstats and hg612 modem stats?

Since Link time = 7 hours 42 min 43 sec
FEC:            14320112                544075
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0

[pooclah]

Max have you swapped modems?

I'm just wondering why this

         
            Downstream   Upstream
Line attenuation (dB):     11.1      0.0

Went to this

         
            Downstream   Upstream
Line attenuation (dB):     11.8      0.0

[adslmax]

No still the same modem billion 8800nl as I don't have other modem as plusnet hub one sold last year

[pooclah]

Strange then. Out of my field so perhaps somebody else can explain it.

Kevin

[adslmax]

Beat me, I don't understand of why line attenuation do change time to time?

[adslmax]

Just noticed both SNR and speed connection has steady now after 6pm.


[attachment deleted by admin]

[attachment deleted by admin]

[adslmax]

Strange then. Out of my field so perhaps somebody else can explain it.

Kevin

Worse case feared me the most are SNR down to -4.7dB with max data rate down to 44914K but stay at 79999K sync rate before I forced it powered it down as things isn't right. This part I don't understand at all why it went below -5dB SNR for FTTC. Wish I showed this to Openreach engineer if I raised this fault with PN but I didn't because I saw modem was steady on red light on warning on the end right side.



[attachment deleted by admin]

[kitz]

Got modem back on after three hours powered down.
The ES and SES has suddenly stopped now and downstream SNR are spot on now.

As mentioned earlier by b*cat when the SNRM starts oscillating like the way it was, then powering down for a while can often resolve this.
I know this isn't the first time and I have definitely told you at least once in the past, possibly more when I've seen your line do similar.  Powering down for a short while resolved it in previously for you.

It usually occurs after an enforced remote power down OR power cut/power surge.    When the modem comes back up the SNR starts spiking in the behaviour displayed on your graphs.
 
It's not unique to your line - I've seen it happen on many other lines.  It's not unique to the modem or FTTC either.   
Mine has been doing so way back to the days of maxdsl.    The first time I saw it happen was using a Voyager 2100 after a workman turned power off at the mains.   I was monitoring using MRTG (there was no Routerstats back then nevermind DSLstas).   

[adslmax]

Yeah ok but I remember PN and Openreach engineer told me try to leave Modem on at all times! Maybe they talked about not too much rebooted modem etc.

The modem seem lots better now

Bitswap:        6375/6375               4006/4006

Total time = 9 hours 18 min 12 sec
FEC:            14320628                544547
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            27              27
LOS:            0               0
LOF:            0               0
LOM:            0               0
Latest 15 minutes time = 3 min 12 sec
FEC:            17              7
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Previous 15 minutes time = 15 min 0 sec
FEC:            45              55
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Latest 1 day time = 9 hours 18 min 12 sec
FEC:            14320628                544547
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            27              27
LOS:            0               0
LOF:            0               0
LOM:            0               0
Previous 1 day time = 0 sec
FEC:            0               0
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Since Link time = 9 hours 17 min 45 sec
FEC:            14320628                544547
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
 >

[kitz]

I remember PN and Openreach engineer told me try to leave Modem on at all times! Maybe they talked about not too much rebooted modem etc

It's all about moderation.   Once in a while does no harm especially if the line is doing silly things like oscillating all over the place
Some people power down their modems every night - I agree that is total overkill, but DLM is designed to make an allowance for that and because it uses what I believe to be a rather unique way of detecting unforced retrains it shouldn't even pay any attention to one power down per day of >30mins.

[adslmax]

I do believe Billion 8800NL was good modem for a long while since 2015. But, I think if it was too much resync by DLM then the Billion are badly affected by spike SNR all over the place. I do remember Openreach engineer did not approved of this modem and told to use Openreach HG612 modem instead.

Maybe I was going to upgraded a new modem soon FRITZ!Box 7590 with great features and better wireless than Billion. But does the Huawei fibre cabinet like those modem? Like broadcom chipset?

[kitz]

the Billion are badly affected by spike SNR all over the place

As mentioned above the SNR spiking after a remote power down is not unique to the Billion.   It can occur on any modem.   It's just that you are more likely to notice it happening because you can record with DSLstats.

I do remember Openreach engineer did not approved of this modem and told to use Openreach HG612 modem instead.

He was probably correct to say so, because at one time that and the ECI modem were the only modems approved by Openreach.  Some engineers wouldn't even entertain the hacked versions which gave line stats because they ran on custom firmware. 

Maybe I was going to upgraded a new modem soon FRITZ!Box 7590 with great features and better wireless than Billion.

Better wireless yes.   But not sure if you need the other features such as 4G backup.  They come with a hefty price tag.    I can't recall off the top of my head which model FRITZ!box my daughter was supplied by Zen, but she hates it because it's fugly and they can't get any decent stats out of it.   The wireless is no better than the TPlink I gave her last year to replace an ECI modem supplied by Openreach when they had a new line installed after they moved.

 

[adslmax]

I got TP LINK VR2600 wireless router, the wifi are superb all round but I don't like the modem on it own because there is no connection uptime on it and will not work with dslstats and hg612 modem stats. This is why I have to use Billion modem as stand alone and disabled wireless on it and use TP LINK router as a wireless from the Billion.