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Author Topic: ADSL2+ very low SNR  (Read 5682 times)

adslmax

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ADSL2+ very low SNR
« on: September 02, 2011, 01:13:26 AM »

My ADSL2+ is appear very low SNR 0.6db for five hours but still stable connection but can I ask my isp to rise SNR to 3.0db ? BT Speedtester show IP Profile 14000K with throughput speed of 13200K

[attachment deleted by admin]
« Last Edit: September 02, 2011, 01:19:47 AM by adslmax »
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burakkucat

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Re: ADSL2+ very low SNR
« Reply #1 on: September 02, 2011, 03:32:23 AM »

Welcome to the Kitz fora. :)

What you are showing us is a snapshot of your then current SNRM, which was, as we see, 0.6 dB. Does the five hour period, to which you refer, relate to the hours of darkness? If so, does your SNRM rise during the daylight hours?

At present, I would advise that you do nothing . . . until we've all gone thought a question and answer session. As other Kitz regulars wake up and log on, there are bound to be other questions coming your way. ;)
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adslmax

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Re: ADSL2+ very low SNR
« Reply #2 on: September 02, 2011, 03:36:41 AM »

I had reboot router as it now showing 3.1db SNR on downstream and sync of 18467K and BT Speedtester now had risen to 16000K IP Profile Rate and throughput of 15477K
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roseway

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Re: ADSL2+ very low SNR
« Reply #3 on: September 02, 2011, 07:00:32 AM »

You seem to be doing exceptionally well for your level of attenuation. There seems to be a fairly large variation in noise margin from time to time, but that isn't particualrly unusual. If the connection is stable, I would say that there's nothing to be done, but you might like to monitor the noise margin using Routerstats to see if there's anything odd happening.
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  Eric

adslmax

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Re: ADSL2+ very low SNR
« Reply #4 on: September 02, 2011, 11:28:51 AM »

Is that true that my isp told me that BTW are roll out all exchanges on ADSL2+ 21CN to get instant ip profile rate (up and down) straight away without have to wait for 3-5 days for the profile to rise. The new IP Profile will be on the new bras quantization MSANs by October (next month) as there is 40% exchanges already on it. The new profile rate will be 88.2% closer to the sync rate.

How can I tell if I am on it ?
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tuftedduck

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Re: ADSL2+ very low SNR
« Reply #5 on: September 02, 2011, 12:29:35 PM »

You can get a snapshot of the state of play at your exchange by going to http://www.kitz.co.uk/adsl/adslchecker.php and tyoing in your details..phone no./post code.
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adslmax

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Re: ADSL2+ very low SNR
« Reply #6 on: September 02, 2011, 03:22:21 PM »

Exchange: Cuckoo Oak    BT Code: WNCKO
Location: High Street,    TF7 5AU
Distance:-    Direct:          1.25 km
     (appx)*    By Road:    2.09 km

Status    
   ADSL enabled:    August 11, 2004
   DSL Max enabled:    March 31, 2006
   SDSL enabled :    Not Enabled
   21CN due : (PSTN)    N/A
   21CN WBC (Broadband)    Enabled
Broadband Access Market    Broadband Access†    Market 3

Fixed ADSL:     2048 kbps    (2 Mb)
   DSL Max:      5500 kbps    (5.5 Mb)
   21CN WBC :    7000 kbps    (7 Mb)

Fixed:    1Mbps and 2Mbps available
   radsl:    512Kbps and 256Kbps available
   MAX:    ADSL Max is available
   TPON:    No info in database
   Check:    The check identified another service on your line which may prevent you from ordering a new ADSL connection. Examples are : Existing adsl connection, DACs, LLU, TPON etc
     
  adsl 1 linecode : GGEC
  dslmax linecode: GEGEGEC
  Explanation of RAG codes.

LLU         
   AOL   Not available   
   Be*   Not available   
   C&W/Bulldog   Not available   
   Edge Telecom   Not available   
   Homechoice   Not available   
   Lumison   Not available   
   NewNet   Not available   
   Node4   Not available   
   O2   Not available   
   Orange   Available   
   Pipex   Not available   
   Smallworld   Not available   
   Sky   Not available   
   TalkTalk   Available   
   Tiscali   Not available   
   UK Online   Not available   
   WB Internet   Not available   
   Zen   Not available   
               
Cable         
   Virgin Media   Available   
   Smallworld Media   Not available   
               
Wireless         
   EMnet   Not available   
   Kijoma   Not available   
   LTT Broadband   Not available   
   Now Wireless   Not available   
   OnLincolnshire   Not available   
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roseway

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Re: ADSL2+ very low SNR
« Reply #7 on: September 02, 2011, 04:19:34 PM »

You have an ADSL2+ connection via 21CN WBC. You may not yet be on the new IP profile system, because your IP profile is less that 88.2% of the connection speed.
« Last Edit: September 02, 2011, 04:21:43 PM by roseway »
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  Eric

adslmax

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Re: ADSL2+ very low SNR
« Reply #8 on: September 02, 2011, 04:40:09 PM »

You have an ADSL2+ connection via 21CN WBC. You may not yet be on the new IP profile system, because your IP profile is less that 88.2% of the connection speed.

How to move into new IP profile system or will BT automatically put me on the new IP profile system itself when it available at my exchange ? My isp told me it will be available in october, next month. How can I tell if I am on the new IP profile system or not ?
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roseway

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Re: ADSL2+ very low SNR
« Reply #9 on: September 02, 2011, 04:58:03 PM »

As far as I know, it happens automatically. I guess you'll know when you do a router resync and get an 88.2% profile, but in truth you're not far off that at the moment.
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  Eric

adslmax

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Re: ADSL2+ very low SNR
« Reply #10 on: September 02, 2011, 05:20:40 PM »

Does 88.2% work out like ip profile change from 16000K to 16287K for the line sync of 18467K, am I correct here ?
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razpag

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Re: ADSL2+ very low SNR
« Reply #11 on: September 02, 2011, 06:12:39 PM »

Either way, you are likely to be on 80-85% of synch rate, so the increase to 88% is extremely negligible. You will NOT notice any physical difference.
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