cancel
Showing results for 
Search instead for 
Did you mean: 
Highlighted
russkiinbootski
Aspiring Contributor
438 Views
Message 1 of 15

Low Ip profile - high noise margin

Go to solution

Story so far...

 

We had a sudden spate of connection droputs resulting in an extremely slow line rate (287.1 Kbps) but the noise margin was around the 6.0 dB mark. The engineer called on 23/08/2016 and discovered that the wires in the external box on our wall were corroded, so he sorted them out and replaced the external box, ran line tests etc. & left saying it would be back up to scratch in 24 hours. The next day the downstream line rate was still 287.1 Kbps but the noise margin had increased to 20.8 dB (presumably as a result iof the wire fix). I left the HH3 alone for 5 days with the folllowing results:

 

Line state:Connected
Connection time:5 days, 14:52:16
Downstream:287.1 Kbps
Upstream:1.173 Mbps
 
ADSL Settings
VPI/VCI:0/38
Type:PPPoA
Modulation:G.992.5 Annex A
Latency type:Interleaved
Noise margin (Down/Up):20.5 dB / 6.2 dB
Line attenuation (Down/Up):26.9 dB / 14.7 dB
Output power (Down/Up):18.2 dBm / 12.2 dBm
FEC Events (Down/Up):854 / 0
CRC Events (Down/Up):0 / 63
Loss of Framing (Local/Remote):0 / 0
Loss of Signal (Local/Remote):0 / 0
Loss of Power (Local/Remote):0 / 0
HEC Events (Down/Up):0 / 62
Error Seconds (Local/Remote):9 / 48
 
 

 

I ran the BT speed test from my BT account which was a silly move as a the test fell over & a line disconnect / reconnect occurred resetting the connection time. I then replied to a text about the engineer visit saying the fault was fixed if no response was made within 5 working days & requested an IP profile / noise margin reset. A few hours later I received a call informing me that the reset was going to place within 4 to 6 hours; I wasn't at home for most of the day so checked the stats this morning, but all that had happened was a line disconnect / reconnect event within the 4 to 6 hour timescale. As the connection time had been reset anyway I tried a different modem but still no joy. The 17070 line test was as silent as the grave (mimicing the state of my broadband). So for your edification here are the latest stats:

 

Connection Information
Line state:Connected
Connection time:0 days, 01:53:24
Downstream:287.1 Kbps
Upstream:1.133 Mbps
 
ADSL Settings
VPI/VCI:0/38
Type:PPPoA
Modulation:G.992.5 Annex A
Latency type:Interleaved
Noise margin (Down/Up):21.3 dB / 6.1 dB
Line attenuation (Down/Up):26.8 dB / 14.7 dB
Output power (Down/Up):18.2 dBm / 12.4 dBm
FEC Events (Down/Up):2 / 4
CRC Events (Down/Up):0 / 32
Loss of Framing (Local/Remote):0 / 0
Loss of Signal (Local/Remote):0 / 0
Loss of Power (Local/Remote):0 / 0
HEC Events (Down/Up):0 / 22
Error Seconds (Local/Remote):3 / 1
 

 

Also wholesale speed test:

Best Effort Test: -provides background information.

 Download  Speed
 0.27 Mbps
  
0 Mbps0.25 Mbps
Max Achievable Speed

 

 Download speedachieved during the test was - 0.27 Mbps
 For your connection, the acceptable range of speeds is 0.1 Mbps-0.25 Mbps.
 IP Profile for your line is - 0.25 Mbps


2. Upstream Test: -provides background information.

 Upload Speed
 0.93 Mbps
  
0 Mbps0.83 Mbps
Max Achievable Speed

 

Upload speed achieved during the test was - 0.93Mbps
 Additional Information:
 Upstream Rate IP profile on your line is - 0.83 Mbps

 

 

Not much more to add really, except that before the problems started I was clocking up between 12 & 12.5 Mbps download speeds - I've resigned myself to another 5 days of painfully slow internet access but would appreciate any help a wee bit sooner than then.

 

0 Ratings
14 REPLIES 14
Distinguished Sage
430 Views
Message 2 of 15

Re: Low Ip profile - high noise margin

Go to solution
You are in a banded profile due to all the restarts /disconnections of your hub you need to maintain a stable connection with no restarts for the next 10 days during this time you noise margin will start to drop automatically and like wise your IP Profile will increase automatically
0 Ratings
russkiinbootski
Aspiring Contributor
427 Views
Message 3 of 15

Re: Low Ip profile - high noise margin

Go to solution

Thanks john46 - wish I'd left that dratted BT speedtest alone then it would only be a couple of days or so left

Tags (1)
0 Ratings
Distinguished Sage
420 Views
Message 4 of 15

Re: Low Ip profile - high noise margin

Go to solution
you do not need to restart the hub to use the BT speedtest
this has been posted about so many times now
0 Ratings
russkiinbootski
Aspiring Contributor
412 Views
Message 5 of 15

Re: Low Ip profile - high noise margin

Go to solution

But I didn't restart the hub when performing the test having read several posts advising ignoring the reset instructions - a disconnection took place during the speed test for the first time after 5 days of stable connection - I can't say for certain whether or not it was by the speedtest being unable to handle the low line rate but it failed to complete and told me I had a problem

0 Ratings
Distinguished Sage
404 Views
Message 6 of 15

Re: Low Ip profile - high noise margin

Go to solution
in that case the speedtest like any other website will have no effect on your connection that was just a coincidence
can you repost your hub stats
0 Ratings
russkiinbootski
Aspiring Contributor
392 Views
Message 7 of 15

Re: Low Ip profile - high noise margin

Go to solution

Too much of a coincidence for my liking - anyway here's the stats as requested:

 

Line state:Connected
Connection time:1 days, 21:14:13
Downstream:287.1 Kbps
Upstream:1.133 Mbps
 
ADSL Settings
VPI/VCI:0/38
Type:PPPoA
Modulation:G.992.5 Annex A
Latency type:Interleaved
Noise margin (Down/Up):21.1 dB / 6.1 dB
Line attenuation (Down/Up):26.8 dB / 14.7 dB
Output power (Down/Up):18.2 dBm / 12.4 dBm
FEC Events (Down/Up):179 / 51
CRC Events (Down/Up):0 / 37
Loss of Framing (Local/Remote):0 / 0
Loss of Signal (Local/Remote):0 / 0
Loss of Power (Local/Remote):0 / 0
HEC Events (Down/Up):0 / 26
Error Seconds (Local/Remote):3 / 3
 

 

0 Ratings
Distinguished Sage
385 Views
Message 8 of 15

Re: Low Ip profile - high noise margin

Go to solution
Providing you can maintain a stable connection the banding will release automatically but any restarts will start the time clock again
0 Ratings
russkiinbootski
Aspiring Contributor
378 Views
Message 9 of 15

Re: Low Ip profile - high noise margin

Go to solution

I gathered that hence I'm having to put up with a painfully slow connection for the next few days - I'd book a holiday if there wasn't the possibility of a crash during the booking process.

0 Ratings
russkiinbootski
Aspiring Contributor
360 Views
Message 10 of 15

Re: Low Ip profile - high noise margin

Go to solution

Weird happenings today - checked my connection expecting to see 5+ days of stability, instead of which this turned up:

Connection Information
Line state:Connected
Connection time:0 days, 03:32:21
Downstream:9.273 Mbps
Upstream:1.139 Mbps
 
ADSL Settings
VPI/VCI:0/38
Type:PPPoA
Modulation:G.992.5 Annex A
Latency type:Interleaved
Noise margin (Down/Up):15.1 dB / 5.8 dB
Line attenuation (Down/Up):26.8 dB / 14.6 dB
Output power (Down/Up):20.6 dBm / 12.4 dBm
FEC Events (Down/Up):1388 / 7
CRC Events (Down/Up):3 / 1
Loss of Framing (Local/Remote):0 / 0
Loss of Signal (Local/Remote):0 / 0
Loss of Power (Local/Remote):0 / 0
HEC Events (Down/Up):1 / 1
Error Seconds (Local/Remote):9 / 5
 

 

Definitely not complaing at the moment as it's definitely heading in the right direction, but a bit puzzling? Does the DLM also reset the line connection when it decides I've been a good boy for long enough & releases me on parole?

 

There was a flurry of events recently acording to the system log {laptop was switched off at this time):

 

12:50:28, 05 Sep.(435251.010000) DSL is up
12:50:27, 05 Sep.(435250.030000) DSL noise margin: 5.90 dB upstream, 15.00 dB downstream
12:50:25, 05 Sep.(435248.960000) DSL line rate: 1139 Kbps upstream, 9272 Kbps downstream
12:50:13, 05 Sep.(435236.640000) CWMP: session closed due to error: Could not resolve host
12:50:13, 05 Sep.(435236.590000) CWMP: Server URL: https://pbthdm.bt.mo; Connecting as user: ACS username
12:50:13, 05 Sep.(435236.570000) CWMP: Session start now. Event code(s): '4 VALUE CHANGE'
12:49:42, 05 Sep.(435205.920000) CWMP: session closed due to error: Could not resolve host
12:49:39, 05 Sep.(435202.870000) CWMP: Server URL: https://pbthdm.bt.mo; Connecting as user: ACS username
12:49:39, 05 Sep.(435202.850000) CWMP: Session start now. Event code(s): '4 VALUE CHANGE'
12:49:39, 05 Sep.(435202.190000) CWMP: Initializing transaction for event code 4 VALUE CHANGE
12:49:35, 05 Sep.(435197.970000) DSL is down after 7248 minutes uptime
12:49:35, 05 Sep.(435197.970000) ETHoA is down after 7248 minutes uptime
12:49:34, 05 Sep.(435197.540000) PPPoA is down after 7248 minutes uptime [Waiting for Underlying Connection (WAN DSL - Up)]
12:49:31, 05 Sep.(435194.150000) PPP LCP Send Termination Request [User request]

 

 

BT Wholesale test returns the following:

 

FAQ

Results Image not loaded

 

 


1. Best Effort Test: -provides background information.

 Download  Speed
 8.01 Mbps
  
0 Mbps21 Mbps
Max Achievable Speed

 Download speedachieved during the test was - 8.01 Mbps
 For your connection, the acceptable range of speeds is 4 Mbps-21 Mbps.
 IP Profile for your line is - 8.18 Mbps

2. Upstream Test: -provides background information.

 Upload Speed
 0.93 Mbps
  
0 Mbps0.83 Mbps
Max Achievable Speed

Upload speed achieved during the test was - 0.93Mbps
 Additional Information:
 Upstream Rate IP profile on your line is - 0.83 Mbps

 

 

Naturally I'm excited by the possibility of 21Mbps download but I won't be holding my breath waiting for that - getting back to my 12 to 12.5 Mbps rate  will do me.

 

0 Ratings