Hi John, I’ve only just found time to check WAMUG mailing list. Thanks for getting back with the results from the Westnet/iiNet contractor’s visit.
Quote: > No There is no noise on my line but the attenuation is usually around 60. > I am getting about 230KBs this morning (1.84Mbs). > The Westnet contractor has been and finds no fault on my line or at the > exchange and of course my speed is OK. End Quote: As I expected. I’ve had them do this at a couple of my clients premises and always seems to be the same result given :-( > The drop in speed always occurs when people are home from work or school and > weekends particularly. > Westnet (iinet) are monitoring the line and will send another technician if > the speed drops again. This has concerned me for some time now. After iiNet took ownership of Westnet, some of my clients & myself included (using Westnet ISP) have been noticing this drop in speed from mid afternoon & on week-ends when you would expect a heavier load on the ISP. I can understand this drop in speed if we were on Cable BUT NOT on ADSL as we are. Cable modem services can slow down significantly if many people in your neighborhood access the Internet simultaenously. Internet speed ultimately depends on the service provider. Your ISP may change their network’s configuration, or suffer technical difficulties, that inadvertently cause your Internet connection to run slow. ISPs may also intentionally install filters or controls on the network that can lower your performance. I’m not convinced as to why this drop in speed is happening, especially since it has only been noticed in the past few months. I will be interested to follow your experience with Westnet / iiNet monitoring the line for your connection. Cheers, Ronni On 14/06/2011, at 11:23 PM, John Daniels wrote: > Hi Ronni > Thank you for all that detailed info., I have done some of the things you > suggest and some details are:- > Modem was Netcomm 5 Plus 4 until last Friday and then Billion 7400N. I have > tried both and am currently on the new Billion. There is no difference in > speed. > > I'm on ppoe with MTU 1492 > > Line speed at the moment 741Kbps (0.74Mbs), attentuation has been 58, now 60 > downstream. Current download speed 93KBs (0.09MB). > > I have done an isolation test with different phone sockets, short cable, with > and without filter etc and there is no difference in speed. I have also > installed the latest modem firmware. > > My download speeds today were between 167KBs this morning to 3.20pm then at > 4.35pm they halved to 86KBs. The speed since then has remained between 88 and > 92KBs. > > So I believe it is some outside influence causing the problem > > A tech from iinet is coming tomorrow morning (Wed) at 8am which is cost free > and I will let you know the outcome. > > Cheers > > John > > > > > John Daniels > [email protected] > > > > On 14/06/2011, at 9:26 PM, Ronda Brown wrote: > >> >> On 14/06/2011, at 6:50 PM, John Daniels wrote: >> >>> >>> Hi everyone >>> >>> I am still being plagued with a big reduction in speed in the evening. Up >>> until 3.20pm it was 162KBs, then went to 90KBs and 50KBs >>> >>> Has anyone else on Hammersley Exchange experienced this? >>> >>> Cheers >>> >>> John >> Hi John, >> >> More details might help you get some advice. >> What Modem? >> What sync / attenuation stats is your modem reporting? (Line Speed / >> Attenuation / Noise details) >> What MTU setting do you have on your modem router? The MTU setting of your >> router will lead to performance issues if set too high or too low. >> The normal MTU (Maximum Transmit Unit) value for most Ethernet Networks is >> 1500 Bytes, or 1492 Bytes for PPPoE connections. >> >> Have you tried an Isolation Test? >> >> Isolation Test >> >> So, you are on ADSL or ADSL2/2+ and are having some problems, someone has >> told you to do an isolation test and you have no idea what that is. >> >> What is an Isolation test >> Basically an Isolation test is when you remove all telephony devices in your >> premises from the phone line. These can include ADSL filters, phones, faxes, >> answering machines, Foxtel Digital (or any other Digital PayTV), EFTPOS >> machines, back-to-base alarm systems, dialup modems, medical alterting >> systems etc – basically anything that plugs into the phone line. >> >> After all devices have been removed, plug your ADSL broadband modem directly >> into the first phone socket into the house, bypassing any ADSL >> filters/splitters (just to eliminate these as a possible problem). The first >> socket is generally the one in the common area of the house (kitchen or >> lounge/front room), but you may have to consider where the line comes into >> the house and trace it if necessary – especially if multiple sockets have >> been installed. Use the shortest phone cable you have (ie 1-2m), and try >> another phone cable if there is no luck with the first. Try various phone >> sockets in the house if what you think is the first socket doesn't work; >> it's not impossible for a single socket to have a fault, and if the house >> has a central filter fitted then some sockets may have no ADSL signal at all >> by design. >> >> Monitor the Internet connection for the difficulty you were experiencing to >> see if it clears. If the problem is still there, refer notes below. >> >> If the difficulty you were experiencing clears, then you can connect one >> filter and one telephony device to your phone line, and monitor your >> internet connection again for the difficulty you were experiencing. >> >> By connecting telephony devices one by one, and testing your internet >> connection each time when you add another device, this process of >> elimination should single out the telephony device which causes difficulty >> with your Internet connection. Bear in mind that since adding a single >> telephony device will introduce a piece of equipment, a filter and a line >> cord into the circuit, *any one of these things* could introduce a fault >> into the circuit – be prepared to swap equipment around and test rigorously. >> >> What is the purpose for doing an Isolation test >> If you are having issues with things like your connection dropping out >> (modem losing ADSL sync), noise/static on your phone line, slower speeds >> than usual, then this test can help isolate the issue. >> >> All these issues are often caused by some form of interference induced into >> line, which could be a result of bad filters, dodgy phone cables, >> malfunctioning telephony equipment, or even nearby electrical devices. >> Ensure that "pest-it" and other electronic rodent repellers (like the >> devices Dick Smith and others sell) are removed from power points – these >> often cause problems with ADSL signals. The same goes for any electrical >> equipment capable of generating an electromagnetic field, such as >> fridges/freezers, air conditioners, compressors, cordless phones, microwave >> ovens, flourescent lights etc. This alone is a good argument for not using >> extension cords, as they act as an antenna for electromagnetic interference >> induction. >> >> Notes >> >> • If after you have done all this and still having issues, it isn't >> always a problem with your line outside your house (Telstra's boundary), it >> sometimes could be an issue with your internal wiring (eg a mouse could've >> chewed the wires in your roof). Issues can also arise with corroded >> cabling/sockets, problems with hardwired equipment that can't be removed >> (alarm systems, wallphones, ringer bells), or internal cabling that won't >> support ADSL due to faulty installation – the latter is why you try all the >> sockets. >> • If after you have done all this and still having issues, it isn't >> always a problem with your line outside your house or your internal wiring. >> It may be possible that your modem has gone faulty and would be good if >> possible to test with another modem. >> If you have completed your isolation tests and still have no ADSL >> connection, an unstable connection, or a poor speed issue etc, it's time to >> escalate the problem to your ISP and let them launch an investigation for >> you. It's in your best interest to complete this process first though for >> several reasons: >> • If the problem is on your end, you can clear it quickly >> yourself. >> • Your ISP will ask you to do it anyway, both for speed and to >> protect you – see point 3 below. >> • If a Telstra tech finds the problem is beyond the Telstra >> Network Boundary Point (NBP), they not only charge you a large (in the >> hundreds) exhorbitant fee, but they leave the problem as is and walk away. >> This is because any and all wiring, sockets, equipment and connections >> downstream/past the NBP are your privately owned equipment, which Telstra >> will not service. Doing your isolation test thoroughly eliminates this as an >> issue, protects you from being charged this fee, and allows you to correct >> any issues with your own equipment more quickly than waiting for a Telstra >> tech to do so. >> >> >> Cheers, >> Ronni >> >> 17" MacBook Pro 2.3GHz Quad-Core i7 “Thunderbolt" >> 2.3GHz / 8GB / 750GB @ 7200rpm HD >> >> OS X 10.6.7 Snow Leopard >> Windows 7 Ultimate (under sufferance) >> -- The WA Macintosh User Group Mailing List -- Archives - <http://www.wamug.org.au/mailinglist/archives.shtml> Guidelines - <http://www.wamug.org.au/mailinglist/guidelines.shtml> Unsubscribe - <mailto:[email protected]>
