You are correct (taken from Kitz):


The ECI Hi-FOCuS M41 DSLAM, which is fitted in all ECI cabinets, is incapable of supporting vectoring. Each one would need to be swapped out for a V41 DSLAM (IIRC). :-X

The Huawei SmartAX MA5616 DSLAM, which is fitted in all Huawei cabinets, is capable of supporting vectoring with a configuration change. I believe a firmware change may also be required.

In reply to a post by WWWombat:

To get node-level vectoring, which is probably needed, the current Huawei cabinets will need new backplanes that are capable of transferring the vectoring data between cards. That's the way I read the Huawei specs, anyway.

FYI - http://lorennetworks.com/presentation/Embrace%20GPON...

MA5616 support vectoring in R311C01

In reply to a post by Ignitionnet:

In reply to a post by WWWombat:

To get node-level vectoring, which is probably needed, the current Huawei cabinets will need new backplanes that are capable of transferring the vectoring data between cards. That's the way I read the Huawei specs, anyway.

FYI - http://lorennetworks.com/presentation/Embrace%20GPON...

MA5616 support vectoring in R311C01

Right.

Perhaps I shouldn't have said that the Huawei cabinets all needed new backplanes. I really should have said that they needed to have the enhanced racks, rather than the standard ones, in order to support vectoring.

This was discussed in an old thread, and I don't think anyone has confirmed what variant BT had gone for, or if they have subsequently changed.

In reply to a post by WWWombat:

Right.

Perhaps I shouldn't have said that the Huawei cabinets all needed new backplanes. I really should have said that they needed to have the enhanced racks, rather than the standard ones, in order to support vectoring.

This was discussed in an old thread, and I don't think anyone has confirmed what variant BT had gone for, or if they have subsequently changed.

I would image they'll worry about node-level vectoring when they have to deploy a second chassis to a site. They aren't going to do it until they absolutely have to and will run with the 5603T's system-level until a second chassis is required.

Isn't "node-level" when the boards within one node co-operate, while "system-level" is where multiple nodes on one site co-operate. And both of them require the backplane capability.

The simplest, board-level, vectoring only works if you ensure that the significant disturbers all end up on the same board in the DSLAM, which I doubt BT can arrange. It would require services to be physically re-connected in the PCP regularly. Obviously it does work if there is only one card deployed in the cabinet. I take that to be an edge case though...

It seems to me that node-level working is the bare minimum that BT need for standard deployment, while system-level (and interconnection by fibre) becomes necessary for multiple cabinets.

In reply to a post by WWWombat:

Isn't "node-level" when the boards within one node co-operate, while "system-level" is where multiple nodes on one site co-operate. And both of them require the backplane capability.

No Sir, a system is a single DSLAM, a node is an access node comprised of a single or multiple systems.

http://pr.huawei.com/en/news/hw-093919-nlv-prototype...

MA5603T: 1.5Tbit/s backplane capacity, 48G/480G bit/s
switch capacity, 20G bit/s slot bandwidth

Haha!!! I WAS going to say this, restrained myself though.

Which dslam has the highest numbers in deployment bt wise?
The eci was the later of the two brands, I got the impression bt started favouring eci very heavily after the early revision huawei "bbq your vdsl modem" scenario?
Is it entirely crazy that a standard deployment with vectoring on the roadmap could have allowed such a major hardware substitution to be required?
I understand that it was still under development but backplane swops, that's about the most awkward part to swop.
Do we know if it's possible to go hunting for people on the trial cabinets, might BT have politely requested radio silence from them until the trial is over?

In reply to a post by lexden16:

You are correct (taken from Kitz):


The ECI Hi-FOCuS M41 DSLAM, which is fitted in all ECI cabinets, is incapable of supporting vectoring. Each one would need to be swapped out for a V41 DSLAM (IIRC). :-X

The Huawei SmartAX MA5616 DSLAM, which is fitted in all Huawei cabinets, is capable of supporting vectoring with a configuration change. I believe a firmware change may also be required.

The Huawei 288 cabinets are MA5603s as far as I know? 6 line card slots, 48 VDSL 2 ports per card?

Edited by deleted (Tue 25-Mar-14 20:08:35)

and still concerning no trials at all on ECI.