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

Login with username, password and session length
Advanced search  

News:

Pages: 1 [2] 3 4 5

Author Topic: Huawei DSLAM - Chipset version changed - Vectoring?  (Read 35792 times)

GigabitEthernet

  • Kitizen
  • ****
  • Posts: 2243
Re: Huawei DSLAM - Chipset version changed - Vectoring?
« Reply #15 on: August 14, 2015, 10:27:55 PM »

Sync so far above max, just 3.6 SNR, it's like it's now targetting 3dB. Much more bitloading now aswell.

Is there a chance the cabinet went down temporarily and your line was the first to reconnect to it? The temporarily reduced noise would have meant a higher sync at the standard 6dB target.

When the other lines connected the noise increased and so your SNR dropped.

I've seen this after a power cut so that's why it caught my eye.
Logged

NewtronStar

  • Kitizen
  • ****
  • Posts: 4899
Re: Huawei DSLAM - Chipset version changed - Vectoring?
« Reply #16 on: August 15, 2015, 12:00:54 AM »


Is there a chance the cabinet went down temporarily and your line was the first to reconnect to it? The temporarily reduced noise would have meant a higher sync at the standard 6dB target.

When the other lines connected the noise increased and so your SNR dropped.

I've seen this after a power cut so that's why it caught my eye.

That would come in under crosstalk issue and Kitz has given you a rundown on that.
So lets see a currently running Hawuai cabinet gets and the f/w update all users on that cabinet will need to resync, I can't believe all lines would just retrain all at once on that cab like a power outage.

there could be 4 line cards in the cabinet but i am sure each card would get the update and resync the customers line before it go's onto the next line card.
Logged

GigabitEthernet

  • Kitizen
  • ****
  • Posts: 2243
Re: Huawei DSLAM - Chipset version changed - Vectoring?
« Reply #17 on: August 15, 2015, 12:28:59 AM »

It wouldn't just be crosstalk though it would be all background noise, if there was a power cut.

I saw a similar thing on ADSL.
Logged

Darren

  • Member
  • **
  • Posts: 56
Re: Huawei DSLAM - Chipset version changed - Vectoring?
« Reply #18 on: August 15, 2015, 02:28:36 AM »

Have had that happen 4 times in 3 years it seems to be when the modem's Bit Allocation Table gets confused
That's a shame, I guess this speed is only temporary then.

Funny you mention that, because I did a speed test either Tuesday/Wednesday morning, & I got 90.67Mb, which is about 15Mb above my normal figure.
Max as in max attainable not throughput.

There wasn't a power outage at least not to the house. Surely if mains was lost to just the cab the battery backup would kick in and there would be no loss of sync.

I was using the connection at the time, total downtime was 7 mins 11 sec.

A phone number that doesn't have FTTC reports on the checker "Sorry your cabinet is temporarily unavailable, capacity will be restored as soon as possible." Availability Date is 02-Sep-15, so it appears the cab is awaiting extra capacity or is full and a new one will be erected. It's a 288 port Huawei with at least 3 cards, probably at least 4 but can't say for sure. Sync was on the lowest end of the estimate (infact the min dropped on the estimate together with the actual sync dropping over the years) suggesting it's getting close to full if not now full.

Anyway, will enjoy the extra bit of speed while it lasts. Thanks all.
Logged

Chrysalis

  • Content Team
  • Addicted Kitizen
  • *
  • Posts: 7583
  • AAISP CF
Re: Huawei DSLAM - Chipset version changed - Vectoring?
« Reply #19 on: August 15, 2015, 08:56:12 AM »

funny all this work for hauwei users and ECI seemingly left to rot :D as if BT want to pretend ECI never happened.

By the way I am pretty sure its a hardware swapout.

chipset version is not firmware version, I will check with a contact if he knows anything.

If BT can afford to swapout hauwei then I damn well hope they can do ECI given there is less ECI than hauwei cabinets, are we second class customers?
« Last Edit: August 15, 2015, 08:59:08 AM by Chrysalis »
Logged

KIAB

  • Reg Member
  • ***
  • Posts: 201
Re: Huawei DSLAM - Chipset version changed - Vectoring?
« Reply #20 on: August 15, 2015, 01:17:54 PM »

There is less ECI than hauwei cabinets, are we second class customers?

Is there any figures for actual number of each cabinets ECI & Hauwei, are they still installing ECI, or have gone over to Huawei cabinets completely, after all the problems.
Logged

Chrysalis

  • Content Team
  • Addicted Kitizen
  • *
  • Posts: 7583
  • AAISP CF
Re: Huawei DSLAM - Chipset version changed - Vectoring?
« Reply #21 on: August 15, 2015, 01:38:13 PM »

I think ECI is roughly 1/3 of total commercial rollout.

Some say I am wrong but as far as I am aware BT have stopped rolling out ECI now, there may be a few infills in ECI areas but thats probably it.

ECI seemed to stop the moment openreach announced they were working on vectoring.
Logged

Weaver

  • Senior Kitizen
  • ******
  • Posts: 11459
  • Retd s/w dev; A&A; 4x7km ADSL2 lines; Firebrick
Re: Huawei DSLAM - Chipset version changed - Vectoring?
« Reply #22 on: August 15, 2015, 04:44:17 PM »

Was buying ECI a cockup by BT ?
Logged

burakkucat

  • Respected
  • Senior Kitizen
  • *
  • Posts: 38300
  • Over the Rainbow Bridge
    • The ELRepo Project
Re: Huawei DSLAM - Chipset version changed - Vectoring?
« Reply #23 on: August 15, 2015, 05:24:22 PM »

A sleepy purr from b*cat to mention that this thread is about Huawei equipped cabinet hardware and an observation made by an Eagle eye . . . <Yawns>  :sleep:
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.

Weaver

  • Senior Kitizen
  • ******
  • Posts: 11459
  • Retd s/w dev; A&A; 4x7km ADSL2 lines; Firebrick
Re: Huawei DSLAM - Chipset version changed - Vectoring?
« Reply #24 on: August 15, 2015, 05:28:24 PM »

@Burakkucat  - apol, off topicness  ;D
Logged

KIAB

  • Reg Member
  • ***
  • Posts: 201
Re: Huawei DSLAM - Chipset version changed - Vectoring?
« Reply #25 on: August 15, 2015, 06:15:41 PM »

Sorry B*Cat. :-[

I must not go off topic... 
I must not go off topic...   
       'Ditto' ;D
Logged

Chrysalis

  • Content Team
  • Addicted Kitizen
  • *
  • Posts: 7583
  • AAISP CF
Re: Huawei DSLAM - Chipset version changed - Vectoring?
« Reply #26 on: August 16, 2015, 06:48:12 AM »

A sleepy purr from b*cat to mention that this thread is about Huawei equipped cabinet hardware and an observation made by an Eagle eye . . . <Yawns>  :sleep:
sorry :p was trying to get attention from those who talk alot about hauwei as everyone seems to think ECI doesnt matter.
Logged

michty_me

  • Reg Member
  • ***
  • Posts: 631
Re: Huawei DSLAM - Chipset version changed - Vectoring?
« Reply #27 on: August 18, 2015, 07:31:35 AM »

I'm wondering if this has just happened to my line. A re-sync at 12:57am with no real gains noticed apart from a slight increase in speeds on the down and upstream. I'll need to double check stats to confirm though.
Logged

NoZephy

  • Just arrived
  • *
  • Posts: 5
Re: Huawei DSLAM - Chipset version changed - Vectoring?
« Reply #28 on: August 19, 2015, 11:55:58 PM »

I've gone from

BDCM:0xa485 / v0xa485
to
BDCM:0xa48c / v0xa48c

How come the versions are so different? people are on a489 or a48c and I think I saw one post with someone on a48d, unless that was a typo.
« Last Edit: August 19, 2015, 11:58:04 PM by NoZephy »
Logged

NewtronStar

  • Kitizen
  • ****
  • Posts: 4899
Re: Huawei DSLAM - Chipset version changed - Vectoring?
« Reply #29 on: August 20, 2015, 12:05:26 AM »

I've gone from

BDCM:0xa485 / v0xa485
to
BDCM:0xa48c / v0xa48c

How come the versions are so different? people are on a489 or a48c and I think I saw one post with someone on a48b.

I guess there are 3 or 4 types of Huawei cabinets (DSLAM) out there so depending on which your currently on the H/W version number will be different.
« Last Edit: August 20, 2015, 12:10:28 AM by NewtronStar »
Logged
Pages: 1 [2] 3 4 5