Texas Chipset!

My router reports this- DSLAM Vendor Information Country: {46336} Vendor: {TSTC} Specific: {4101 }. Would I be correct in that DSLM I connect uses a Texas Instruments chipset.

If so would there be in any benefit in matching my router to this and if so could anyone recommend routers?

Yes I believe that is Texas Instruments kit (but there are others [here] that don't agree).

In my experience matching chipsets isn't the answer! See my 'router' link below.
Your best bet would be to post your full line stats so people can see how things are to advise you.

NB. Good to register on TBB so people don't get confused with other anon posts

Possibly depends on how long the line is to the exchange, could you post the router line stats.

I've tried several routers with various chipsets connected to the exchange which has a DSLAM with TSTC chipsets and the "best" for my connection is a router with a Broadcom chipset ..... I'm using a Netgear DG834GT just now.

The downstream attenuation for my long line is around 60dB depending which router is connected.

In reply to a post by b4dger:

Yes I believe that is Texas Instruments kit (but there are others [here] that don't agree).

I think it's TSMC in Taiwan

Hello again, I'm no longer Anonymous- My stats for 2700hvg, I'm on to BT via their forum for my noise margin to be reset to 6db


Rate: 6336 kbs 448 kbs

Max Rate: 6336 kbs 1056 kbs

Noise Margin: 8.0 dB 25.0 dB

Attenuation: 42.0 dB 26.5 dB Diagnostic page reports down attentuation as 39!

Output Power: 19.8 dBm 12.4 dBm

Protocol: G.DMT Annex A
Channel: Interleaved
DSLAM Vendor Information Country: {46336} Vendor: {TSTC} Specific: {4101 }
ATM PVC: 0/38

Uncanceled Echo: -9.3 dB
Ok
VCXO Frequency Offset: 11.9 ppm

Ok
Final Receive Gain: 20.5 dB

Ok
mpulse Noise Comp. Tones:

0

Ok
Excessive Impulse Noise:

0

What's the problem? Speed is about right.

Just looked at your router page I have the same speed touch in the attic, I was advised by BT it was old and might be unreliable, they sent me a HH2 however it would push up attenuation to 45, hence why I ended up with the 2wire.

This is what i was getting back in July-

Download
speed achieved during the test was - 6164 Kbps
For your connection, the acceptable range of speeds is 600-7150 Kbps.
Additional Information:
Your DSL Connection Rate :7552 Kbps(DOWN-STREAM), 448 Kbps(UP-STREAM)
IP Profile for your line is - 6500 Kbps

Rate Cap:
7552 kbs
Attenuation @ 300kHz:
39.7 dB
Uncanceled Echo:
-13.0 dB
Ok
VCXO Frequency Offset:
17.2 ppm
Ok
Final Receive Gain:
21.4 dB
Ok
Impulse Noise Comp. Tones:
0
Ok
Excessive Impulse Noise:
0
Ok

Something a bit odd going on here. Please can you post the link to what samknows says about your exchange.

Here is the link-
http://www.samknows.com/broadband/exchange/WNNN

May I ask the need for the exchange details?

In reply to a post by JimmyConway:

Here is the link-
http://www.samknows.com/broadband/exchange/WNNN

May I ask the need for the exchange details?

Thanks .

The reason for asking about the exchange was to see if it is WBC enabled, which it isn't.

I wanted to know that as the 3dB rise that was mentioned is usually associated with a move from G.DMT, that you are on (up to 8Mbps), to G.992.5 (ADSL2+, provided by WBC for BT-wholesale based connections).

Changing router (chipset) can result in a change of the reported attenuation, but 3dB is lot. What was the bit in your earlier post about diagnostics reporting 39dB, rather than the main 42dB?

My feeling about your line stats is that your home phone wiring may be a bit below par. Getting the noise margin reset may help for a short time, but the 8dB is a symptom of a problem, not the cause.

What stats do you get if you connect to the test socket, on the wall at the back in this pic with the modem ADSL cable (no plug-in extension cable)? Preferably check this during daylight hours, as it can make quite a big difference. Especially in your case. (Because of the actual stats you have).

Ok, i thought you were going on to ask for bank account details (joke) .

I do not have any extensions connected when i moved in, the line needed to return to BT so I asked the guy who came out to disconnect the extension, so I just use the only socket in the house, I was also given a faceplate by openreach guy when i moved in it splits your broadband line and telephone line.

I use the 2700, i have this reading Attenuation: 42.0 dB if i use the Home - broadband on the stats page
and this Downstream Atten. at 300kHz: 39.3 dB if i go home-settings-diagnostics-dsl. But if I use the HH2 I get a reading of 45.

I will take of the faceplate in the morning and connect to that socket in your link

Edited by deleted (Sat 22-Oct-11 23:05:37)

OK .

Seeing as you aren't likely to give me you bank details, I shall probably soon give you a phone number to talk to me - it's much better than a forum. It will start 090... .

Back to the subject. From what you say, I think it would still be a good idea to try that test socket. You are getting quite a poor connection speed for the attenuation, and filtered faceplates can fail. 42dB attenuation gives most people over 7Mbps connection speed, as you used to have.

What do you have plugged into it apart from the router? Just a phone? And is the phone close to it or is that on an extension cable.

If you do try the test socket, or whenever you next do a reconnection, please take the stats immediately afterwards, particularly the connection speeds and noise margins .

Ok, its just connected to adsl v10, no extension wire. Although the phone is BT trial i signed upto, I think i can mention this now as the trial has finished for some time. I will connect to the tset socket in the morning.

I appreciate your time, you could instead have been watching xfactor or Big brother.

Edited by deleted (Sat 22-Oct-11 23:15:17)

I appreciate your time, you could instead have been watching xfactor or Big brother.

He isn't going to thank you for that slur.

In reply to a post by Zarjaz:

I appreciate your time, you could instead have been watching xfactor or Big brother.

He isn't going to thank you for that slur.

Very true!

Hopefully there was no offence taken. I shall leave my humour to one side from this point!. Ill put the stats up in the morning. Again its appreciated.

Just the broadband connected, it looks worse, I was only joking about Tv programs (joke)

Rate: 6080 kbs 448 kbs
Max Rate: 6080 kbs 1036 kbs
Noise Margin: 9.0 dB 24.0 dB
Attenuation: 42.0 dB 26.5 dB
Output Power: 19.8 dBm 12.2 dBm

Re the TV programs, nothing wrong with a bit of banter . Though in truth, if I were stuck on the proverbial desert island, no entertainment but a TV that only received those two programs, I would teach myself basketry.

Very unusual for the test socket to give lower connection speed than the normal one, but "there it is".

The sync-time noise margin is 9dB, so if that gets reset to 6dB, (as per your earlier post), which is the default you will get up to 750kbps more, but even that isn't as good as what you used to have. Puzzling .

The question is therefore what caused the rise to 9dB. It could be something that is still around. Like a new DECT telephone or microwave, or anything electrical/electronic between the high speed times and now.

Did you have any spell of instability, or do a large number of reconnections in a short time at any time?

Well yes, several weeks ago I had no connection for well over 24hrs, all i could do was phone Bt support (not a joke), however it did come back in the end, it was off most of the weekend. Although, I have as yet, not got back to what was.

Disconnections not that I'm aware, I always try and leave a large period of time between resets.

At a loss now the only appliance left on is the 2wire, all the rest is turned off by the mains when not in use. That only leaves the phone, and that means the attic!

Phone - attic (uh?) - only one socket - which is the master where the router is?

Edited by RobertoS (Sun 23-Oct-11 12:57:01)

In reply to a post by JimmyConway:

Well yes, several weeks ago I had no connection for well over 24hrs, all i could do was phone Bt support (not a joke), however it did come back in the end, it was off most of the weekend.

About Mon 3rd Oct:

In reply to a post by Bob_s2:

BT has confirmed that a "power issue" at a major exchange in Birmingham is causing problems for broadband customers across the UK.

It was Weekend of September 24th & 25th

The only BT socket that I have is in the lounge it has ADSL v10 faceplate the 2wire connects to this, there is extension socket this has been disconnected and not in use , the attic was reference to me having to go up and get a older phone down and replace the dect phone I was using.

Ive gone back to how I had it before the dect phones and put the faceplate back these are the readings within 30secs -

Rate: 6208 kbs 448 kbs
Max Rate: 6208 kbs 1036 kbs
Noise Margin: 8.8 dB 24.0 dB although the noise margin has risen to 9.3
Attenuation: 42.0 dB 26.5 dB
Output Power: 19.8 dBm 12.2 dBm

Edited by deleted (Sun 23-Oct-11 14:36:30)

Can you confirm that when you removed the faceplate there were no wires at all attached to it please ? That it was completely detached.

No wires at all, "detached" there have been no wires connected since openreach guy year last June.

Sorry to be a pedant about that, but you would be amazed how many people repeat what they were told, but what they were told was incorrect, or at least "insufficiently detailed" .

I'm stuck now, apart from the SNRM reset already talked about.

No problem that is fine, I can appreciate the concern through similar experience.

Just two more questions one poster on the thread does not think there is problem this was repeated on the Bt forum too ? Also the 9db to 6db and increase of 750kbps, is this set a figure?. Anyway thanks for your time, I'm going to browes your site and perhaps this evening instead of Xfactor and BB weave a basket.

LOL re the TV.

On the "up to 8Mbps service", the expected difference between a sync-time 9dB and 6dB is 500kbps-750kbps. On ADSL2+ it can be as much as 1200kbps. It all depends on the line itself, and many factors.

Re the expected speed, see this graph. Given optimised wiring, which you seem to have, I would expect to be near the maximum for the attenuation. Given that the graph is from real-world reports, even the average figure is poor, and must reflect something not as it should be.

Thinking about that, a drop doesn't need to be caused by something on your premises. It could be a neighbour, or cross-talk noise from other lines on your cabinet, and so on. I lost 200kbps when the chap across the road went from dialup to broadband, and another 500kbps when my e-side pair was swapped due to complete failure.

I'd settle for what you got. You might get another 0.75 Meg but you've got no inkling how your line is wired at t'other end.

I have had reset done now, although better, and not to far away for the next profile. I put the suggestions you made as to why the speed would drop, to BT , they would not commit, however they would go as far as " with some luck it might get back to where it was". The current changes are in bold.

Rate: 6336 kbs (7136) 448 kbs

Max Rate: 6336 kbs ( 7136 )
Noise Margin: 8.0 dB (6.4) 25.0 dB

Attenuation: 42.0 dB (41) 26.5 dB

Output Power: 19.8 dBm 12.4 dBm

Protocol: G.DMT Annex A
Channel: Interleaved
DSLAM Vendor Information Country: {46336} Vendor: {TSTC} Specific: {4101 }
ATM PVC: 0/38

Uncanceled Echo: -9.3 dB
Ok
VCXO Frequency Offset: 11.9 ppm

Ok
Final Receive Gain: 20.5 dB

Ok
mpulse Noise Comp. Tones:

0

Ok
Excessive Impulse Noise:

0

Well It synced again soon after my bedtime from the last post, and it appears time does indeed heal. Rate: 6336 kbs to 7136 and now 7488. Result!

Max Rate: 6336 kbs ( 7136 ) Now 7488
Noise Margin: 8.0 dB (6.4) /25.0 dB

Attenuation: 42.0 dB (41) now 44 /26.5 dB

Output Power: 19.8 dBm 12.4 dBm

Protocol: G.DMT Annex A
Channel: Interleaved
DSLAM Vendor Information Country: {46336} Vendor: {TSTC} Specific: {4101 }
ATM PVC: 0/38

Uncanceled Echo: -9.3 dB
Ok
VCXO Frequency Offset: 11.9 ppm

Ok
Final Receive Gain: 20.5 dB

Ok
mpulse Noise Comp. Tones:

0

Ok
Excessive Impulse Noise:

0


XRaySpeX Where would we all be if we settled for what we have!