Thứ Sáu, 7 tháng 10, 2016

Odd? part 1

  • Llama
    O.P.

    Well apparently when researching for a provider, I found I'm a VERY DISAPPOINTING 5,818metres from an exchange. :( But when I go into my router settings I get this:

    Uptime: 2 days, 6:16:51
    DSL Type: G.992.1 annex A
    Bandwidth (Up/Down) [kbps/kbps]: 256 / 1,536
    Data Transferred (Sent/Received) [MB/MB]: 250.54 / 894.87
    Output Power (Up/Down) [dBm]: 0.0 / 16.5
    Line Attenuation (Up/Down) [dB]: 8.0 / 11.0
    SN Margin (Up/Down) [dB]: 8.0 / 30.5
    Vendor ID (Local/Remote): TMMB / GSPN
    Loss of Framing (Local/Remote): 0 / 0
    Loss of Signal (Local/Remote): 0 / 0
    Loss of Power (Local/Remote): 0 / 0
    Loss of Link (Remote): 0
    Error Seconds (Local/Remote): 0 / 0
    FEC Errors (Up/Down): 0 / 0
    CRC Errors (Up/Down): 0 / 0
    HEC Errors (Up/Down): 0 / 0

    Which I researched, and the attenuation and SN Ratio and is pretty good. It doesn't make any sense. :(
    (REALLY slow connection, I know. :()

    Can anyone explain this???

  • canon1d

    0verlord writes...

    Can anyone explain this???

    Two things. Your DSLAM is not at the exchange. You're on a 1.5M port profile.

  • 2012-Jan-10, 7:43 pm
    Leong

    I agree with canon.

    Well it could be some rare customer end modem problem. but looks a lot like the DSLAM sets it to 1500 kbs.

    Maybe its a congested RIM and 1500 kbs is set by telstra until it gets a backhual upgrade ?

  • 2012-Jan-10, 7:43 pm
    Llama
    O.P.

    So is that good or bad? I'm not an expert at this stuff. Also what's a DSLAM?

  • 2012-Jan-10, 8:00 pm
    canon1d

    0verlord writes...

    So is that good or bad?

    Did you request a plan at 1.5M? If not, bad. Ring your ISP.

  • 2012-Jan-10, 8:00 pm
    Llama
    O.P.

    Yes. :( Can't afford anything better. (though TPG has a good deal I might switch to)

  • canon1d

    0verlord writes...

    Yes. :( Can't afford anything better. (though TPG has a good deal I might switch to)

    In which case the answer is 'good'.

  • Llama
    O.P.

    OK, great. :)

    Anyway, what's a DSLAM and why isn't it connected to the exchange?

  • 2012-Jan-10, 8:08 pm
    Ohhnotyou!

    canon1d writes...

    Did you request a plan at 1.5M? If not, bad. Ring your ISP.

    Maybe his modem can't connect at a higher speed.

    5,818metres from an exchange.

    That's quite a way.

  • 2012-Jan-10, 8:08 pm
    Llama
    O.P.

    I know :(
    Not sure about my modem, but my plan is 1.5Mbps.

    I'll say this again: What's a DSLAM and why isn't it connected to teh exchange?

  • 2012-Jan-10, 8:09 pm
    Ohhnotyou!

    0verlord writes...

    Not sure about my modem, but my plan is 1.5Mbps.

    Even with ADSL2+ your modem will try to connect at the highest speed. If it can't connect it tries a lower speed and keeps dropping the speed until it does connect.

    http://www.internode.on.net/residential/adsl_broadband/easy_broadband/performance/

    According to the graph you couldn't expect much better performance at that distance anyway.

    I'll say this again: What's a DSLAM and why isn't it connected to teh exchange?

    Teh interweb iz a wonderful thing.
    http://en.wikipedia.org/wiki/Digital_subscriber_line_access_multiplexer

  • 2012-Jan-10, 8:09 pm
    Llama
    O.P.
    this post was edited

    Actually I'm getting 1.35Mb/sec off my exchange, which is higher than the graph says even for ADSL2+ at that distance.

  • 2012-Jan-10, 8:12 pm
    Llama
    O.P.

    If I were to upgrade and my DSLAM wasn't at the exchange would I get an OK speed?
    Based on the graph, at my distance, I'd get less speed than what I'm getting now, but at my attenuation rate, I'd get full speed, 24Mbps. Any help, I'm not a pro at this.

  • 2012-Jan-10, 8:12 pm
    User 453696

    0verlord writes...

    Actually I'm getting 1.35Mb/sec off my exchange,

    not on a 1.5/256 connection your not
    maybe 1.35/256 in which case you line sucks so trying for adsl2+ isnt going to help or probably happen

  • 2012-Jan-10, 8:14 pm
    Llama
    O.P.
    this post was edited

    http://speedtest.net/result/1698083095.png
    http://www.pingtest.net/result/54211773.png
    Is this bad? (keep in mind this is from 15m away from the router, and it is on a stock telstra one.) Oh, also isn't overhead typically 10% Of data meaning this is pretty good?

    EDIT: Diff. server. 178.5KB/sec out of 187.5KB/sec max theoretical isn't too bad is it?

  • 2012-Jan-10, 8:14 pm
    Llama
    O.P.

    So is ADSL2+ worth it and based on my specs in OP what sort of speeds should I be getting?

  • Llama
    O.P.

    Just did another speed test and got THIS?! How is this even possible with 1500/256?
    http://www.speedtest.net/result/1698360557.png
    I got 229KB/sec, yet 1500 is only 187.5?!

  • Boogmeister

    0verlord writes...

    Just did another speed test and got THIS?! How is this even possible with 1500/256?

    Speedtest sites are notorious for being unreliable/not that accurate.

    DSLAM is the equipment sitting in the exchange/roadside cabinet that supplies the DSL signal for your modem.

    You are not connected back to the exchange via copper. It would be back to a roadside cabinet which is then fed via fibre back to the exchange.

    Distance to exchange in your case is irrelevant.

    If ADSL2+ is available at your cabinet you could expect more or less the full sync speed.

    If only ADSL1 is available then 8Mb shouldn't be a problem at all but congestion issues may slow things down when things get busy.

  • Newcrest

    0verlord writes...

    I found I'm a VERY DISAPPOINTING 5,818metres from an exchange

    That may well be true, but it is not your exchange. Your exchange is probably less than a kilometre away but it doesn't have a name like what is shown in the usual sources.

    0verlord writes...

    Anyway, what's a DSLAM and why isn't it connected to the exchange?

    The DSLAM is the thing that does your internet. Yours is likely housed in a box which acts like a mini-exchange, and the box in turn is connected to the main exchange.

    0verlord writes...

    Actually I'm getting 1.35Mb/sec off my exchange

    Yes, that's bits not bytes (usually shown with a capital B). There are 8 bits to a Byte. ADSL is not 100% efficient as you have to transmit data to tell about the data you are transmitting. You won't get much better than 88% efficiency. So 88% of your plan's speed of 1.5Mbps = 1.35Mbps.

    0verlord writes...

    EDIT: Diff. server. 178.5KB/sec out of 187.5KB/sec max theoretical isn't too bad is it?

    Probably some aberration of either the speed test site, your browser, or the shaping software used by Telstra.

    The theoretical maximum on a 1.5Mbps service plan is closer to 165KB/s.

  • canon1d

    Cheezangel writes...

    That's quite a way.

    The loss figures are very low. OP is on a CAN based DSLAM rather than an exchange based DSLAM.

  • 2012-Jan-11, 8:00 pm
    User 453696

    well we are actually connected to the tapping Sub exchange thats linked to the wanneroo exchange lol
    thats the confusing part as on the Telstra list there is no Tapping exchange listed only Wanneroo
    the Sub was built about 5 years ago and when it was first built it appeared on the telstra list then it vanished and no listing for DA083 shows � even checking status on Bigpond it shows direct connection to Wanneroo
    I`m currently on 8/384 and used to get connected at 6-7/384 till about September when i had to get my connection slowed to 4 just to stay connected
    Really wish NBN was available lol

  • 2012-Jan-11, 8:00 pm
    Newcrest

    Hmmmm writes...

    well we are actually connected to the tapping Sub exchange thats linked to the wanneroo exchange lol

    So it was a trick question, good thing I wasn't being too lazy and mentioned the sub-exchange scenario.

    thats the confusing part as on the Telstra list there is no Tapping exchange listed only Wanneroo

    The Telstra lists are made for their purposes and not to help us out. The sub-exchange's ports will be included in the numbers for the main exchange. It gets even more complicated if a non-Telstra provider is in a sub-exchange, but I only know of one of those (in Canberra).

  • 2012-Jan-11, 8:27 pm
    User 453696

    nah no trick was just curious if it showed adsl2+ as being available since people seem to be able to tell just by looking at the DA number lol

    i have never tried for adsl2+ since i havent been with Telstra for years and all other isps seem to offer non enabled exchange connections � 8/384 only on Telstra Subs

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