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392 posts

Ultimate Geek
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Topic # 25500 23-Aug-2008 13:33 Send private message

I live in Henderson and yes, my house is quite a distance away from the exchange.

My router told me my line attenuation is 54.0 dB and it can get an attainable rate of 943kbps only!  Is this normal for an ADSL (not ADSL2+) connection.

  Downstream Upstream
SNR Margin (dB): 10.4  31.0 
Attenuation (dB): 54.0  33.1 
Output Power (dBm): 11.9  14.5 
Attainable Rate (Kbps): 944  757 
Rate (Kbps): 943  164 
K (number of bytes in DMT frame): 59 
R (number of check bytes in RS code word):
S (RS code word size in DMT frame):
D (interleaver depth):
 
Super Frames: 938484  938482 
Super Frame Errors:
RS Words:
RS Correctable Errors:
RS Uncorrectable Errors: N/A 
HEC Errors: 243 
OCD Errors:
LCD Errors:
ES Errors


My house alarm is not monitored and I have filter for every used phone outlet.

Is this normal for connection with attenutation of 54.0 dB?  How can I reduce attenuation?

Also, shoud I move to ADSL2+ (e.g. Vodafone Red Zone) to get better better, or will it be quite useless given the bad attenuation I got?

Furthermore, is it normal to have different line attenuation for downlink vs uplink?

Thanks!

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49 posts

Geek


  Reply # 159149 23-Aug-2008 14:36 Send private message

Is this normal for connection with attenutation of 54.0 dB?  How can I reduce attenuation? Move house. (attn is related to distence form exchange >64 = realy bad or no service)

Also, shoud I move to ADSL2+ (e.g. Vodafone Red Zone) to get better better, or will it be quite useless given the bad attenuation I got? Adsl 2 will probably cause more unstalble line and maby a little faster speed, then again it might slow down too.


Furthermore, is it normal to have different line attenuation for downlink vs uplink? Yes.


http://www.geekzone.co.nz/forums.asp?ForumId=82&TopicId=25165

Have a look at the link above for a demonstration of adsl1 vs 2 and distence.

3749 posts

Uber Geek
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  Reply # 159175 23-Aug-2008 17:39 Send private message

You should get a bit more out of your connection, maybe 1.5-2Mbps. But every situation is different. You say your alarm is not monitored, but this does not necessarily mean that the line does not pass through the alarm. You should confirm whether or not this is the case, as it will impact your DSL.
Also anything over 50dB line attenuation should really have a full install, else you are going to have ongoing issues.
I work in the West, and recently sorted another geekzoner out with similar issues:
http://www.geekzone.co.nz/forums.asp?forumid=49&topicid=23241
PM me if you would like some assistance.

Fraser




Chorus has spent $1.4 billion on making their ADSL broadband network faster. Why not spend a couple of hundred to make sure you are getting the most out of your connection?
Geekzone special price: $150* for master splitter install, normally $200+ through your ISP. Auckland and Waikato areas.
*Travel charges may apply. Additional costs may apply for complex installs.
I install - Naked DSL, DSL Master Splitters, VoIP, RBI Rural Broadband. Also a dealer for WorldxChange.
Need help in Auckland or Waikato? Click my email button, or email me direct: [my user name] at geekzonemail dot com

139 posts

Master Geek


  Reply # 164897 16-Sep-2008 18:51 Send private message

Dude im 99% shure i know whats wronge here. Im beting that the cord that goes between your router and the wall jack is not the one suplied with the router. That cord is very important and although any cord that fits will seem to work right it wont! The cord needs to be a good qaulity cord. Most telephone cords only have + and - wires but the ones for the routers have an earth wire. And i bet there made better to. Anyways if you have an ordinary telephone cord attached to your router you can get low synch speeds and high attenuation (about 54%). But if you look at the attenuation synch speed graphs you will have a synch speed lower than that which someone with that synch rate should have. Basicly get a good cord from somewhere like dick smiths and ask them to help you, tell them its for your router and ask for someone who knows something about them.

Long story short: replace cord!(needs to have + - and an earth wire). Get one thats made for internet routers. :D gl

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