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[JoshShep]

Just a quick question, to isp's have any control over speed profiles? Like throughput speeds?

Or does the DLM control everything speed related?

[Black Sheep]

Just a quick question, to isp's have any control over speed profiles? Like throughput speeds?

Or does the DLM control everything speed related?

They can over-ride DLM if required, but it's usually DLM managed.

[JoshShep]

Even on Fibre?

[Black Sheep]

Yes. They're not going to install a system they have no control of.

[JoshShep]

I know what your saying, just when I have asked TalkTalk what profile I'm on they just say, they have no control over profiles, this is done by OR or the DLM.

Thanks

[Black Sheep]

Oh sorry, my mistake. I wrongly assumed you meant does anybody have control of the speeds, or is it all DLM-managed.

[JoshShep]

Oh sorry, my mistake. I wrongly assumed you meant does anybody have control of the speeds, or is it all DLM-managed.

D'oh!   

[Black Sheep]

Oh sorry, my mistake. I wrongly assumed you meant does anybody have control of the speeds, or is it all DLM-managed.

D'oh!   

Ha ha ...... just watching The Simpsons as we 'speak'. 

[JoshShep]

And as for showing BT the stats from the Modem, I think they will try and blame that to be the issue as I was supplied with the ECI not the HG612.

Even though they both have perform the same.

[Black Sheep]

And as for showing BT the stats from the Modem, I think they will try and blame that to be the issue as I was supplied with the ECI not the HG612.

Even though they both have perform the same.

I'm not clued-up with the modems, I'm afraid. All I know is, if we install a Huawei modem when it should be an ECI, boy do we get a rocket up our a*se.

Asbo and others will probably know how 'they' know, but 'they' definitely do. Just like when the change-out process was put in place to get rid of the Modem 1A's (Used to set on fire). 'They' would know if you'd installed a 1A or not.

Like I say, I dont get involved in the modem side of things, but there are reasons as to which one you get.

[Bald_Eagle1]

Hi Josh,

Windows 7

Still 192.168.1.1

Laptop: Wireless, Modem to Router Wan port, then Router back to modem Lan port 2

Router ip is 192.168.254

Same as mine, except I login to Windows with a username & password.

I have sent you a PM.


Paul.

[waltergmw]

Hi BS,

Here's my take on the situation.
Whilst "they" should quite properly check the modem's performance after installation or engineering works have been accomplished, I very much doubt if any attention is paid perhaps after the training period is over ? After all, there is so little going on, perhaps we could have hundreds of "theys" drinking tea all day long monitoring every single FTTC service ? !!!!!!!!!!!!!!!!

I strongly suspect sleeping dogs are left asleep !!

Kind regards,
Walter

[burakkucat]

I strongly suspect sleeping dogs are left asleep !!

  Not if I can obtain access to them!  [bellow]Meow![/bellow]

[asbokid]

Also, I think there is some sort of incompatibility with the HG612 modem & the ECI DSLAM that you are connected to.

QLN should only show 3 lots of data (as per your earlier snapshot graphs).

My Huawei HG612, connected to a Huawei DSLAM, has never exhibited the strange QLN graphs issue.

BlackEagle has a similar setup to yours & he also saw strange graphs for a while, which appears to have rcently resolved itself.
He also has what appears to be a very noisy connection.

http://forum.kitz.co.uk/index.php/topic,10968.msg215093.html#msg215093

The availability of upstream QLN data may be a feature, rather than a flaw, of the ECI DSLAM..

From ITU-T Recommendation - G.992.3 (07/2002) SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS [1]

Specifically, p.94 of [1]:

8.12.3.2
Quiet Line Noise PSD* per subcarrier (QLN-ps)

The quiet line noise PSD QLN(f) for a particular subcarrier is the rms level of the noise present on the line, when no ADSL signals are present on the line.   The quiet line PSD QLN(f) per subchannel shall be measured by the receive PMD** function during diagnostics mode and initialization. The measurement shall not (i.e., cannot) be updated during showtime.

The QLN(f) shall be sent to the far-end transmit PMD function during diagnostics mode (see 8.15.1) and shall be sent on request to the near-end Management Entity. The near-end Management Entity shall send the QLN(f) to the far-end Management Entity on request during showtime (see 9.4.1.10).

* PSD = Power Spectral Density
** PMD = Physical Media Dependent (sublayer)

So the Management Entity (modem controller) on either end of the loop, far-end or near-end, can request the other end's QLN PSD during showtime.

It would appear that the Huawei SmartAX DSLAM ignores such requests, whereas the ECI Vinax DSLAM fulfils those requests (sometimes?)

cheers, a

[1] http://www.analytic.ru/articles/lib26.pdf

[Bald_Eagle1]

The availability of upstream QLN data may be a feature, rather than a flaw, of the ECI DSLAM..

I wondered if that could be the case

It would appear that the Huawei SmartAX DSLAM ignores such requests, whereas the ECI Vinax DSLAM fulfils those requests (sometimes?)

It was the sometimes part that threw me.

I think BlackEagle mentioned that the US data suddenly appeared, even though the modem hadn't re-synced (retrained)

My understanding was that QLN data (& Hlog data too) was not updated until the next retrain.