it might replace banding but SRA doesnt manage interleave levels.

I think that g.inp that has been mentioned is effectively a seamless variant of interleaving where it only applies delays for short periods when needed.

Edited by Chrysalis (Wed 16-Jul-14 08:42:04)

ISPReview reports:

In reference to www.ispreview.co.uk/index.php/2014/05/bt-prepare-phase-2-vectoring-...:

The new trial will also include both Physical Retransmission (G.INP) and Seamless-Rate-Adaptation (SRA) technologies, which Openreach said they�re �very interested in testing� and see as being useful to help augment the benefits provided by vectoring.

DLM is a somewhat generic term: no doubt that BT will continue to manage line characteristics to ensure they are reliable, but technologies like SRA and G.INP should offer an improvement to customers whose lines can have many days between the errors that trigger DLM.

g.inp I can see some nasty downsides tho, if its frequently going on and off, its going to be an artifical jitter. As sudden changes of latency for certian types of use will be noticeble by the end user. SRA isnt so nasty as its just a reduction of burst speed. The end user experience will be for the most part the same.

Really what BT need is a option on the line to have no management that changes latency. We know they wont turn off DLM, but an option where they only adjust sync speed but leave delay alone would be nice.

Edited by Chrysalis (Wed 16-Jul-14 10:55:46)

In reply to a post by Zarjaz:

This is the first time that DLM has taken an interest in my line, i've had Infinity 2 (80Mb) for just over two years now.

And it was your equipment that caused its intervention, you shouldn't really be complaining.

So next time you have an electrical device that goes a bit mad I should ask UK Power Networks to cut your mains voltage down to 110v (from 230) or maybe drop the frequency to 40 Hz from 50...

DLM should *not hinder* a connection, and should not take days to recover from an occurrence.

you are worried about dropping from 80 to 72............

I am lucky to get 4 on a very good day!

In reply to a post by TheHorseman:

I move to PlusNet tomorrow so getting them to do something is going to be easier than fighting BTs 'customer service'.

The migration will reset DLM - mine did. Get that UPS fixed

In reply to a post by jchamier:

The migration will reset DLM - mine did. Get that UPS fixed

It doesn't seem to have done, I'm still on an interleave depth of 1141 when it is normally fastpath. The UPS is currently sitting in the spare bedroom awaiting a new battery. I may try a single power cycle of the modem and see if that makes any difference. If not then a call to PlusNet is in order.

In reply to a post by IamQ:

DLM should *not hinder* a connection, and should not take days to recover from an occurrence.

I agree, it really should take into account the previous behaviour of the line and only take action if the problem shows up again.

In reply to a post by TheHorseman:

In reply to a post by jchamier:

The migration will reset DLM - mine did. Get that UPS fixed

It doesn't seem to have done, I'm still on an interleave depth of 1141 when it is normally fastpath. The UPS is currently sitting in the spare bedroom awaiting a new battery. I may try a single power cycle of the modem and see if that makes any difference. If not then a call to PlusNet is in order.

My modem used to periodically get put on interleaving. Each time it stayed for 14 days before removed at 6am. I'm pretty sure that there's nothing PlusNet can do about it.

Edited by Andrue (Tue 22-Jul-14 18:45:55)

Well, a power cycle of the modem resulted in a drop to 71556 and interleave dropping a bit to 1133. Will have to see if PlusNet can get DLM reset for my line. I have never synced at less than 79999 in all the time I have had Infinity ( just over two years). So it's particularly annoying to have this happen now.