Attenuation - 63.5db at 2.2 km from exchange

[psychocandy]

Hmmm. Plugged into the master socket and I'm still getting this attenuation figure (its actually no different when using it on my extension).

Also, the most I've managed to sync at is 1800.

Since I'm only 2.2km from the exchange, shouldn't I be getting better than this?
Any other ideas?

I live on new-ish estate so the phone cabling 'should' be OK (bought the house from new in 2000). Then again, you never know, do you?

Is there anything I can do about this? Is it worth complaining to BT that my line should be better quality?

[FrostFree]

Post your full stats using this utility.

Frostfree

[psychocandy]

/usr/sbin/adslctl: ADSL driver and PHY status
Status: Showtime Channel: INTR, Upstream rate = 768 Kbps, Downstream rate = 1824 Kbps
Link Power State: L0
Mode: G.DMT
Channel: Interleave
Trellis: ON
Line Status: No Defect
Training Status: Showtime
Down Up
SNR (dB): 5.1 8.0
Attn(dB): 63.5 31.5
Pwr(dBm): 16.9 12.5
Max(Kbps): 1984 896
Rate (Kbps): 1824 768
G.dmt framing
K: 58(0) 25
R: 16 16
S: 4 8
D: 32 8
ADSL2 framing
MSGc: 1 1
B: 58 25
M: 4 8
T: 1 1
R: 16 16
S: 4.2711 8.6153
L: 472 208
D: 32 8
Counters
SF: 2569005 2569003
SFErr: 1593 46
RS: 43673104 21836525
RSCorr: 33762208 2362
RSUnCorr: 3120 0

HEC: 1168 32
OCD: 0 0
LCD: 0 0
Total Cells: 187874694 0
Data Cells: 5061218 0
Drop Cells: 0
Bit Errors: 0 0

ES: 1567 0
SES: 224 0
UAS: 28 0
Total time = 12 hours 8 min 38 sec
SF = 2569005
CRC = 1593
LOS = 442
LOF = 0
ES = 1567
Latest 1 day time = 12 hours 8 min 38 sec
SF = 2569005
CRC = 1593
LOS = 442
LOF = 0
ES = 1567
Latest 15 minutes time = 8 min 38 sec
SF = 30523
CRC = 34
LOS = 7
LOF = 0
ES = 36
Previous 15 minutes time = 15 min 0 sec
SF = 52930
CRC = 53
LOS = 2
LOF = 0
ES = 51
Previous 1 day time = 0 sec
SF = 0
CRC = 0
LOS = 0
LOF = 0
ES = 0
15 minutes interval [-30 min to -15 min] time = 15 min 0 sec
SF = 52931
CRC = 44
LOS = 6
LOF = 0
ES = 46
15 minutes interval [-45 min to -30 min] time = 15 min 0 sec
SF = 52930
CRC = 60
LOS = 87
LOF = 0
ES = 42
15 minutes interval [-60 min to -45 min] time = 15 min 0 sec
SF = 52931
CRC = 26
LOS = 3
LOF = 0
ES = 24

[FrostFree]

The best you'll probably get with such high attenuation is in the region of 2.5 - 3MB, however you have a lot of errors and your SNR is low. Try the test from the master socket to see how much of the problem is down to your internal wiring.

Living in a new development does not gurantee good quality telephone lines, your line probably goes through junction boxes that pre-date your property. Furthermore, your wiring to the exchange is never in a straight line, so whilst it may be just 2.2km away point-to-point, it could be using up to 4km of cabling!

This advise is to the best of my limited knowledge, and I stand to be corrected by the real boffins.

Frostfree

[psychocandy]

Originally Posted by FrostFree

The best you'll probably get with such high attenuation is in the region of 2.5 - 3MB, however you have a lot of errors and your SNR is low. Try the test from the master socket to see how much of the problem is down to your internal wiring.

Living in a new development does not gurantee good quality telephone lines, your line probably goes through junction boxes that pre-date your property. Furthermore, your wiring to the exchange is never in a straight line, so whilst it may be just 2.2km away point-to-point, it could be using up to 4km of cabling!

This advise is to the best of my limited knowledge, and I stand to be corrected by the real boffins.

Frostfree

I would be happy with 2.5 to 3Mb !!!!

Tried it from the master socket - same results. At least it proves my internal wiring is OK.

So theres no way to complain to BT or anything about the attentuation on the line? Is there anything they can do? I had problems with the whole line a few months ago and they came out and fixed it. Problem was the house builders hadnt sealed in the line properly or something and something had rusted.

[dpearce33]

Hi -Thought I would share my recent experience. I have the same attentuation and have been suffering from a very poor connection with frequent dropouts and poor and variable SNR (8.0db at best).
After a number of frustrating calls to Sky I finally managed to get connected to Tier 3 support. What a great guy. He took the time to analyse my line to establish the best the it could support. Unfortunately it had to be capped to 1Mb (BT crappy wiring) but it is now rock steady with an SNR of 12.5db and a ping of 35ms (down from 150ms)

[MrStabby]

Originally Posted by psychocandy

Tried it from the master socket - same results. At least it proves my internal wiring is OK.

You need to try it from the test socket. You can reveal this by unscrewing the front of your master socket and removing the bottom half.
Only using the test socket will rule out any internal wiring issues.

[psychocandy]

Originally Posted by dpearce33

Hi -Thought I would share my recent experience. I have the same attentuation and have been suffering from a very poor connection with frequent dropouts and poor and variable SNR (8.0db at best).
After a number of frustrating calls to Sky I finally managed to get connected to Tier 3 support. What a great guy. He took the time to analyse my line to establish the best the it could support. Unfortunately it had to be capped to 1Mb (BT crappy wiring) but it is now rock steady with an SNR of 12.5db and a ping of 35ms (down from 150ms)

I'm not getting many dropouts (I dont think) and the connection seems OK. Much better than my previous 512K with EFH Broadband anyway....

Wheres my SNR listed? This is different to noise margin, isnt it?

[psychocandy]

Originally Posted by MrStabby

You need to try it from the test socket. You can reveal this by unscrewing the front of your master socket and removing the bottom half.
Only using the test socket will rule out any internal wiring issues.

Theres nothing else connected to the master socket, no extensions or anything.

The only difference is that the master socket is on the front plate which plugs into the test socket on the back plate.

Can't see how there'd be any difference?

I agree there may be if I had extensions connected to the back of the face plate running from the master socket (but I havent).