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ADSL Anomaly Madness

  • 23-03-2010 1:51am
    #1
    Terrib1e.one
    Registered Users Posts: 12 ✭


    Hi guys, guess ill start this by thankin anyone who can help shed any light, much appreciated! I'll try not to make this too long winded or complicated but here goes:

    Been a happy enough 7Mb At Home Vodafone customer (I know, right!? :eek: ) since my "early-migration" last November. Due to distance from the exchange (~47dB line attenuation) etc I'm told I can only reach a max of 5Megs or so, thats fine as thats what I've been getting but I'd like to do all i can to improve this if at all possible.
    Was ready to pull my hair out the last 2 weeks with the low speeds/weird sync rates I was getting. The rage was fueled in part by coming onto boards and realising what Vodafone were getting upto (not as theraputic as I had imagined! :rolleyes:). Anyway, realised, at least in my case, I may have judged too soon as it transpires a 24Hr Monitored Alarm system was installed in the house without a filter while I was away. Thats OK, going to get it sorted but the question really is what is the best way to get the alarm guy to do it!? The reason I ask is because I've noticed some strange things while tinkering around/monitoring my connection the last two weeks. Maybe its all the alarms fault but I dont think so.

    Firstly, I noticed that the Noise Margin on my line goes UP when someone picks up the telephone:
    Phone Down: http://img391.imageshack.us/img391/1333/voyager1b.jpg
    Phone Off Hook: http://img180.imageshack.us/img180/5393/voyager2a.jpg
    This led me to figure out that at least for short term purposes if I restart the router with the telephone off the hook I could sync at a better rate. Was only synching at ~1500Kbps, synched at ~4000Kbps with phone off hook. Anyone any ideas what this might be about?
    Secondly and on a similar note i noticed that turning on and off the recessed lighting and other lighting in the house had a pretty major effect in LOWERING the noise margin on the line. Can be seen as the two troughs in the SNR Monitor box here: http://img510.imageshack.us/img510/6441/dmttest3.jpg

    As to why im on FastTrack and not Interleaved i've no idea :rolleyes: but obviously the dips are due to interference on the internal cabling. What Im wondering is whats the best/most cost effective solution to stop this!? I was thinking if got the alarm guy to set it up so my router was connected with insulated cable downstairs in the hall at the master socket then I could run the rest of the computers in the house wirelessly. Not a great solution as I would like to have wired internet for gaming on the PC/Xbox. Is the only solution after this to rewire the extensions where these devices are connected and is this usually expensive!?
    One other question someone might know about is whether it makes much of a difference if I get the guy to install a central splitter/filter for the house or one just for the alarm system? Thanks again to anyone who bothered reading all this and has any help :D


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