router attenuation change

Hi can a router really make a big difference in attenuation or do you think its just reporting wrong im with talk talk and usually use a D-Link DSL-2780 (talk talk supplied) but recently got chose to be part of a BETA trial on talk talk labs to use a hauwei HG523a i set it up yesterday but haven't really looked into the status page till just now.

Here's the Stats

hauwei HG523a (new router)

Connection Status

ADSL synchronization status Up
ADSL up time 12:10:04

Line Status

Upstream line rate (kbit/s) 1019
Downstream line rate (kbit/s) 10404
Line standard ADSL2+
Channel type Fast
Upstream SNR (dB) 8.5
Downstream SNR (dB) 6.2
Upstream line attenuation (dB) 20
Downstream line attenuation (dB) 35
Upstream output power (dBmV) 12.3
Downstream output power (dBmV) 20.5
Upstream CRC 131040
Downstream CRC 281861
Upstream FEC 0
Downstream FEC 4424752

D-Link DSL-2780 (old router)

ADSL STATISTICS
Mode
Routing
ADSL Mode ADSL2+
ADSL Type Annex A
Status Up

Downstream Upstream
Rate(Kbps) 9517 1003

SNR Margin(dB) 6.0 6.1
Attenuation(dB) 40.0 21.2
Output Power(dBm) 0 0
Super Frames 4156 4157
RS Correctable Errors 0 0
RS Uncorrectable Errors 0 0
HEC Errors 0 0
Total Cells 3250 1322
Data Cells 0 0
Bit Errors 0 0

Both same cabling brand new filter that come with the new router filter plugged directly into test socket used to have a pre-filtered faceplate but part of the trial is ive got to use the supply'd filter and i dont have a front faceplate the OR engineer put my pre filtered 1 on for me and took the NTE5 normal faceplate but the stats are identical even when using my old pre filtered plate.

So was the dlink adding extra attenuation or is it just a fluke (every one around me gets a 30-32 autten but ive always got more near 37-40 but i understand that means nothing as i could take a diff route completely after the cab) Although this link dose say

Recorded Line Length (from exchange): 2172m
Estimated Attenuation (on ADSL): 30dB

Which makes me wonder even more if it is just a knackered old line and the new router handles it better

sorry for the little essay Thanks for any info

Ash

no one

Ash

In reply to a post by acpsd775:

Although this link dose say

Don't believe it! It says 19 dB attn. for me, but I get 26-27 dB on many routers.

It obviously has no inkling of line length and can only go by map distances.

In reply to a post by XRaySpeX:

In reply to a post by acpsd775:

Although this link dose say

Don't believe it! It says 19 dB attn. for me, but I get 26-27 dB on many routers.

It obviously has no inkling of line length and can only go by map distances.

thanks for the reply i think ive answered my own question anyway out of curiosity i plugged my old Sky sagecom router in to the talktalk line

ADSL Link Downstream Upstream
Connection Speed 10187 kbps 1019 kbps
Line Attenuation 35.0 dB 20.0 dB
Noise Margin 4.7 dB 6.9 dB

very similar results to the hauwei so that Dlink must actually add a fair few dbs on lol

i find it quite funny that talktalk internet works no matter what you put for the user/pw my sky router connected to the net even though its hard coded with skys details i was just expecting sync sats but not to work lol

Ash

Edited by acpsd775 (Sun 01-Apr-12 18:38:48)

If the DLink doesn't quote the output power

Output Power(dBm) 0 0

I would be a bit wary of it.

In reply to a post by yarwell:

If the DLink doesn't quote the output power

Output Power(dBm) 0 0

I would be a bit wary of it.

These are the stats with the dlink plugged into my sky line as you can see its put the attenuation at 41 were as the sky router on the sky line gives 37 as you see it is showing output power when in the sky line

Mode
Routing
ADSL Mode ADSL2+
ADSL Type Annex A
Status Up

Downstream Upstream
Rate(Kbps) 9213 1030

SNR Margin(dB) 7.0 9.0
Attenuation(dB) 21.7 41.0
Output Power(dBm) 19 12

Super Frames 25268238 25268232
RS Correctable Errors 50949 3633
RS Uncorrectable Errors 0 0

HEC Errors 0 0
Total Cells 0 0
Data Cells 218440375 14511073
Bit Errors 0 0

just to avoid any confusion i use my new huawei on my talktalk line i use my talktalk dlink on my sky line(better customisation that the sky router) and the sky router is just spare now lol
Ash

Edited by acpsd775 (Sun 01-Apr-12 19:14:15)

In reply to a post by acpsd775:

as you see it is showing output power when in the sky line
Downstream Upstream
Attenuation(dB) 21.7 41.0

As you will also see it is reversing the attenuations on the Sky line which it didn't do on the TT line.

Explain that if you will!

In reply to a post by XRaySpeX:

In reply to a post by acpsd775:

as you see it is showing output power when in the sky line
Downstream Upstream
Attenuation(dB) 21.7 41.0

As you will also see it is reversing the attenuations on the Sky line which it didn't do on the TT line.

Explain that if you will!

it did show the atten on the TT line in the first post
Dlink Attenuation(dB) 40.0 21.2

hauwie Upstream line attenuation (dB) 20
Downstream line attenuation (dB) 35

sky sagecom Line Attenuation 35.0 dB 20.0 dB

all on the talktalk line
Ash

EDIT
oh wait sorry i read that wrong lol yea it also reversed it on the talktalk line too i switched it round in the stats lol

Edited by acpsd775 (Sun 01-Apr-12 20:10:28)

In reply to a post by acpsd775:

it did show the atten on the TT line in the first post Attenuation(dB)

Exactly! And they're NOT REVERSED!

i read what you put wrong lol yea it also reversed it on the talktalk line too i switched it round in the stats in the origonal post as to not confuse and i forgot in the sky stats lol

the router in speaking as 2 places to get stats

first place

DSL (Sync) Summary

System Uptime 0:17:30
Modem DSL(Sync) uptime 0:16:49
ADSL Mode ADSL2+
Interleaving On
DSL Line Speed
up 994 kbps
down 9213 kbps
Line Attenuation
up 21.7
down 41.0
SN Margin
up 9.0
down 11.3
Total Errors Seconds 0

Second place

Mode
Routing
ADSL Mode ADSL2+
ADSL Type Annex A
Status Up

Downstream Upstream
Rate(Kbps) 9213 994

SNR Margin(dB) 11.3 9.0
Attenuation(dB) 21.7 41.0
Output Power(dBm) 20 12

Super Frames 61480 61474
RS Correctable Errors 421 16
RS Uncorrectable Errors 0 0

HEC Errors 0 0
Total Cells 9 91
Data Cells 16133 25262
Bit Errors 0 0

as you can see the second place gets it mixed up the first dont i use the second place because it seams to have a bit more info

There took off the dlink while its on the sky line

Ash

Edited by acpsd775 (Sun 01-Apr-12 20:15:08)