Sloooow speed

[HavellN]

back with an update:

router has been connected for almost 18 consecutive days now, at the glorious speeds below:

ADSL Link             Downstream    Upstream
Connection Speed  480 kbps        448 kbps
Line Attenuation    53 db            15.5 db
Noise Margin         15 db             18 db

also, where is the best place to buy a 2Wire 2700HGV from? can only seem to find them on ebay?

thanks,
Nath

[Simon]

Yup, that's the only place you can get them, Nath.  Don't pay more than twenty quid, and try to get a new one. 

[Rik]

Preferably Dual SSID.

[HavellN]

Thanks guys.

Ive put a bid in for one, fingers crossed.

What does a dual SSID version give extra?

[Rik]

It's the latest version, other than that there's little practical difference as the second SSID is only for use with the BT Fusion service.

[Glenn]

Also with the dual SSID, you won't get a 12 day reboot, if the single SSID model has SBC firmware loaded.

[Rik]

This is true, though I found the single SSID, SBC, model gave me a higher sync.

[Sebby]

back with an update:

router has been connected for almost 18 consecutive days now, at the glorious speeds below:

ADSL Link             Downstream    Upstream
Connection Speed  480 kbps        448 kbps
Line Attenuation    53 db            15.5 db
Noise Margin         15 db             18 db

also, where is the best place to buy a 2Wire 2700HGV from? can only seem to find them on ebay?

thanks,
Nath

Ouch. Something's really wrong there, even if it's been stable.

[HavellN]

I've managed to secure a 2700HGV from ebay, hopefully that will arrive in the next couple of days...

[Glenn]

The set up guides can be found at http://www.idnetters.co.uk/forums/index.php?topic=8927.0

[HavellN]

Cool thanks for the link, hopefully it will all go smoothly

[HavellN]

Back again, got the 2700HGV setup and installed this evening.  the Netgear router had stayed connected for 24 days at the same profile speed 480kps.  Currently on a worse speed with the new router.  Ive listed some of the info the new router gives me currently, also done a BT speedtest.

Is there anyway i can get my BRAS profile reset, to restart from scratch as it were?

thanks in advance for any useful comments
Nath

DSL Connection Details
  DSL Line (Wire Pair): Line 1 (inner pair)
  Protocol: G.DMT Annex A
  Downstream Rate: 2272 kbps 
  Upstream Rate: 448 kbps 
  Channel: Interleaved
  Current Noise Margin: 5.0 dB (Downstream) 17.0 dB (Upstream)
  Current Attenuation: 59.2 dB (Downstream) 31.5 dB (Upstream)
  Current Output Power: 17.7 dBm (Downstream) 11.9 dBm (Upstream)
  DSLAM Vendor Information: Country: {0x0F} Vendor: {ALCB} Specific: {0x00}
  PVC Info: 0/38

Data Errors

Statistics Collected for 0:58:35

	Since Reset	Current 24-Hour Interval	Current 15-Minute Interval	Time Since Last Event
ATM Cell Header Errors:	1079	1079	975	0:00:00
ATM Loss of Cell Delineation:	486	486	447	0:00:00
DSL Link Retrains:	1	1	0	0:20:01
DSL Training Errors:	0	0	0	0:00:00
DSL Training Timeouts:	0	0	0	0:00:00
DSL Loss of Framing Failures:	0	0	0	0:00:00
DSL Loss of Signal Failures:	2	2	0	0:25:02
DSL Loss of Power Failures:	0	0	0	0:00:00
DSL Loss of Margin Failures:	2	2	0	0:25:02
DSL Cumulative Errored Seconds:	290	290	241	0:00:00
DSL Severely Errored Seconds:	6	6	4	0:00:50
DSL Corrected Blocks:	10852	10852	9738	0:00:00
DSL Uncorrected Blocks:	1171	1171	1062	0:00:00
ISP Connection Establishment:	2	2	2	0:39:10

Test1 comprises of Best Effort Test:  -provides background information.
    Your DSL connection rate: 2208 kbps(DOWN-STREAM),  448 kbps(UP-STREAM)
    IP profile for your line is - 135 kbps
    Actual IP throughput achieved during the test was - 83 kbps

If you wish to discuss these results please contact your ISP.

If you are experiencing problems with specific applications, servers or websites please contact your ISP for assistance.

Your test has completed please close this window to exit the performance tester.

[Sebby]

If you sync at night, there is more noise around, so you sync lower to achieve the target SNRM. Your profile is still at 135k, so your throughput is going to be terrible. Hopefully things will be a bit more stable and it will clear shortly.

[HavellN]

Stats at the moment:

Test1 comprises of Best Effort Test:  -provides background information.
    Your DSL connection rate: 448 kbps(DOWN-STREAM),  448 kbps(UP-STREAM)
    IP profile for your line is - 135 kbps
    Actual IP throughput achieved during the test was - 104 kbps

If you wish to discuss these results please contact your ISP.

If you are experiencing problems with specific applications, servers or websites please contact your ISP for assistance.

Your test has completed please close this window to exit the performance tester.

DSL Connection Details
  DSL Line (Wire Pair): Line 1 (inner pair)
  Protocol: G.DMT Annex A
  Downstream Rate: 448 kbps 
  Upstream Rate: 448 kbps 
  Channel: Interleaved
  Current Noise Margin: 14.0 dB (Downstream) 16.0 dB (Upstream)
  Current Attenuation: 59.2 dB (Downstream) 31.5 dB (Upstream)
  Current Output Power: 14.8 dBm (Downstream) 11.9 dBm (Upstream)
  DSLAM Vendor Information: Country: {0x0F} Vendor: {ALCB} Specific: {0x00}
  PVC Info: 0/38

All these errors below dont look good to me, anyone know what exactly thay mean?

Statistics
Collected for 9:00:24

	Since Reset	Current 24-Hour Interval	Current 15-Minute Interval	Time Since Last Event
ATM Cell Header Errors:	36253	36253	6	0:00:06
ATM Loss of Cell Delineation:	27963	27963	1	0:00:17
DSL Link Retrains:	3	3	0	6:51:55
DSL Training Errors:	0	0	0	0:00:00
DSL Training Timeouts:	0	0	0	0:00:00
DSL Loss of Framing Failures:	4	4	0	6:51:56
DSL Loss of Signal Failures:	16	16	0	6:51:56
DSL Loss of Power Failures:	0	0	0	0:00:00
DSL Loss of Margin Failures:	133	133	0	6:51:56
DSL Cumulative Errored Seconds:	3270	3270	4	0:00:06
DSL Severely Errored Seconds:	745	745	0	0:05:03
DSL Corrected Blocks:	98820	98820	27	0:00:06
DSL Uncorrected Blocks:	37767	37767	7	0:00:06
ISP Connection Establishment:	0	0	0	0:00:00

[Rik]

The most important one, Nath, is that you've dropped the connection 3 times in 9 hours (it could even be 16 times, I've never known the difference between link retrains, which I tthink is re-syncs, and loss of signal). Clearly, you're re-connecting at a lower speed, which is what's pushing the profile down - if you go to the DSL diagnostics page, you should see the lower speeds listed there.

Something is putting a horrible amount of noise on your line and, until that is resolved, re-training would achieve nothing.

[Glenn]

Those connection stats look just like my line

[attachment deleted by admin]

[Rik]

Are you seeing drops, Glenn?

[Glenn]

I had 9 or 10 ppp drops 2 days ago, since then it's been fine, still chugging on my 2000kbs profile, before that I had 7 days with no problems.

[Rik]

Mmm. Nath's screen is worded differently, so there's no clue there as to which was dropping, but the profile suggests sync.

[HavellN]

ok, heres the DSL Diagnostics info:

General Information
  DSL Line (Wire Pair): Line 1 (inner pair)
  Downstream Rate Cap: 8128 kbps
  Downstream Atten. at 300kHz: 57.5 dB

  Uncancelled Echo: -13.2 dB Ok
  VCXO Frequency Offset: 1.2 ppm Ok
  Final Rx Gain: 34.5 dB Ok
  Impulse Noise Comp. Tones: 0 Ok
  Excessive Impulse Noise: 0 Ok
  Impulse noise protection:  0.94
  Delay of latency path:  4.00 ms

Sorry for the small font on this one

	Downstream		Upstream
Time	Line		Rate	Max1	Max2	Max3	Mgn1	Mgn2	Attn	Pwr	CRCs	FECs	INP	DLY		Rate	Max	Mgn	Attn	Pwr	CRCs	FECs		Mode	Vendor	State	Exit Code	Echo	VCXO	Rx Gain	INC Tones
2009/03/04 22:06:16 GMT	1		2208	2216	1792	1792	12.1	12.0	59.2	17.6	13	177	0.63	4.00		448	812	17.0	31.5	11.9	0	2		G.DMT Annex A	Alcatel	230/103	IDLE_REQUEST	-14.1	-3.8	34.5	0
2009/03/04 22:43:46 GMT	1		2272	2292	608	608	12.2	0.0	59.2	17.7	11664	46166	0.62	4.00		448	816	17.0	31.5	11.9	1983	2082		G.DMT Annex A	Alcatel	230/103	ERR_SIG_INTERRUPT	-15.0	2.1	34.5	0
2009/03/05 01:15:52 GMT	1		1216	1244	0	0	12.3	-1.0	59.2	16.8	33231	83393	0.74	4.00		448	828	17.0	31.5	11.9	2669	2220		G.DMT Annex A	Alcatel	230/103	ERR_LOS_LIMIT	-16.3	2.3	34.5	0
2009/03/05 01:16:30 GMT	1		672	688	380	380	12.4	2.0	59.2	15.5	260	441	0.67	4.00		448	772	15.0	31.5	11.9	51	58		G.DMT Annex A	Alcatel	230/103	ERR_LOF_LIMIT	-16.3	1.9	34.5	0
2009/03/05 01:18:29 GMT	1		1440	1448	1064	1064	12.1	-1.0	59.2	16.9	2737	4114	0.64	4.00		448	824	17.0	31.5	11.9	427	464		G.DMT Annex A	Alcatel	230/103	ERR_LOS_LIMIT	-17.1	0.1	34.5	0
2009/03/05 12:51:36 GMT	1		448	460	-1208	-1208	12.3	7.0	59.2	14.8	14454	70769	0.94	4.00		448	796	16.0	31.5	11.9	878	872		G.DMT Annex A	Alcatel	229/103	N/A	-13.2	1.2	34.5	0

[Rik]

That's not good, Nath. Four re-syncs since midnight and two yesterday evening. While that's going on, your profile is going to stay low.

Have you done all the usual checks, eg connecting to the test socket, listening for interference with an AM radio etc?

[HavellN]

I tried before using the test socket and it didnt seem to make a lot of difference.

I have removed the bell wire.  What is the trick with the AM radio?

Other stuff on other phone sockets are a cordless bt phone in the living room, a non coredless phone upstairs, and sky HD in the living room - all have filters attached.

thanks,
Nath

[Rik]

It would be worth unplugging the Sky box for a while, Nath, and see if that makes any difference. Sky box modems are notoriously noisy.

ADSL uses the same frequency range as AM radio (which is one of the reasons why noise is greater at night due to the increased propagation of radio waves). Take a battery powered AM radio and tune it away from a station, so that you just have white noise. Wander around the house, particularly near electrical appliances and the phone sockets (and cable to the router) and listen for that noise to increase. If it does, then you have a noise problem and should be able to use the radio to isolate the cause. The other thing to try is swapping the filters, or doubling them up (two in series). This can sometimes trap a bit more noise.

If you run RouterStats for 24 hours or more, you'll also build a better picture of whether the noise is cyclical or random. You can download RS from here:

http://www.vwlowen.co.uk/internet/files.htm

[HavellN]

ok, have unplugged sky and the upstairs phone now.  have turned the router off and on again.  it now seems to have upgraded its firmware to version 6.1.1.48.1-enh.tm even though i had put all the recommended DNS entries in...

havent managed to find a battery powered AM Radio yet...

currently working at home via a vpn so not so easy to do some of the speedtests that are out there.

thanks,
Nath

General Information
  DSL Line (Wire Pair): Line 1 (inner pair)
  Downstream Rate Cap: 8128 kbps
  Downstream Atten. at 300kHz: 57.5 dB
  Uncancelled Echo: -16.3 dB Ok
  VCXO Frequency Offset: -2.1 ppm Ok
  Final Rx Gain: 34.5 dB Ok
  Impulse Noise Comp. Tones: 0 Ok
  Excessive Impulse Noise: 0 Ok
  Impulse noise protection:  0.76
  Delay of latency path:  4.00 ms

Time Line	Rate	Max1	Max2	Max3	Mgn1	Mgn2	Attn	Pwr	CRCs	FECs	INP	DLY	Rate	Max	Mgn	Attn	Pwr	CRCs	FECs	Mode	Vendor	State	Exit Code	Echo	VCXO	Rx Gain	INC	Tones
2009/03/05 14:31:01 GMT	1	576 596	1516	1516	12.4	16.0	59.1	15.2	5392	11509	0.76	4.00	448	844	17.0	31.5	11.9	163	235	G.DMT Annex A	Alcatel	236/104	N/A	-16.3	-2.1	34.5	0

[Rik]

Doesn't look like it's the Sky box then, Nath.