Cable modem speed question
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From: Sylvia Else on 22 Sep 2009 20:08 ArseClown wrote: > G'day all. I have my internet connection with Telstra via a Motorola > cable modem model SB5100i using an ethernet connection. I was told > that if I use better cables the data transfer speed will improve. > Any truth to that? I just have the cables that came with it. I get > horrible upload speeds of just 20kbps. Also there is a Linksys VOIP > box inline, but that doesn't seem to have any effect. Expert advice > needed please. ta! > Sounds like the old gold-CDs that were claimed to produce better sound. An upload of 20kbs is going to compromise download speeds. Something's not right. Talk to Telstra. Sylvia.
From: chuckcar on 22 Sep 2009 22:41 ArseClown <4vs5g6g34e(a)4ge56r6e4.org> wrote in news:1268428.Q5gtIc8gEu(a)turd.org.au: > G'day all. I have my internet connection with Telstra via a Motorola > cable modem model SB5100i using an ethernet connection. I was told > that if I use better cables the data transfer speed will improve. > Any truth to that? I just have the cables that came with it. I get > horrible upload speeds of just 20kbps. You're kidding right? 20kb/s is 20,000 *bits* per second roughly. Which would be 2,000 Bytes/second. Isn't your IP responsible for providing it's own service as advertised? Have you *called* their tech support? If so did you get any improvement and if not enough or any what happened then? >Also there is a Linksys VOIP > box inline, but that doesn't seem to have any effect. Riight. a internet telephone which *uses* the high speed connection exclusively has no effect on it. Try removing it and power cycling the cable modem and see what happens to your speed. Do the same with *anything* else hooked up to either the phone line or ethernet cables. When your speed goes up you can start adding again until it drops. That will be your cause. alt.2600 removed - completely irrelevant group. -- (setq (chuck nil) car(chuck) )
From: "nobody >" on 22 Sep 2009 23:13 Sycho wrote: > heh The solution is simple (if you're using a wired connection). > Replace the CAT5 cables with CAT5e and upgrade the NIC (Network > Interface Card) to one that supports a 10/100/1000 Mbps throughput. > > CAT5 only supports up to 100 Mbps while CAT5e supports up to 1000 Mbps > (a gig). Oh really? I know that some broadband providers do offer gargantuan "speeds" at a premium price, but most broadband connections are hard-put to tax a 10baseT 10mb CAT3 connection. Past the "modem" is the home network, and the speed you want there determines that cabling. 100mb works for almost all home use, but some folks need more bandwidth for video etc. Most "gig" equipment actually only gets up to 300-500mb due to cost. The cabling still is capable of doing "gig", this was done so that the cable wasn't the throttle point. It's a hell of a lot cheaper to replace switches/routers with higher spec stuff when available rather than redoing the premise wiring plant..... For the short runs in most residential networks, CAT5 "plain" will often handle 100baseT if the terminations (plugs and jacks) are done well. I've had short runs of CAT3 that would actually run at 100mb if reterminated with CAT5/6 connectors with the "twists up tight". (that's known as "no money in the budget for new wire yet" upgrading, usually temporary) For what it's worth, late production runs of CAT "anything" were often the next higher level. The reason it was stamped as the "older spec" was that the manufacturer didn't want to certify/test it to the higher level, or they had contracts to fill that were spec'ced so tight that the customer wouldn't accept the next higher grade (really!). CAT5 "plain" was designed for a short-lived "50mb" standard. When 100mb settled out, the cable was designated CAT5E. CAT6 or "gig" was (and I think still is) a never-fully-defined spec, but is pretty much accepted. I've seen so much physical changes in the design of CAT6 that this makes sense. Twist rates and ratios between pair twists have changed, wire size has changed, connectors are constantly changing, and there's even internal "pair separators" in the new cables. What a lot of people don't realize is that CAT3/10mb and CAT5(e)/100mb use only two of the four pairs, one TX and one RX. CAT6/"gig" uses two pair for each direction with some very interesting modulation schemes to achieve the high thruput. I'm rambling now, but basically changing the premise wiring past the router. to improve the feed from a cable or DSL "modem" isn't the answer. Going back to the "provider's side" of the "modem" is a different matter. That's where the problem as explained by the OP is at.
From: wisdomkiller & pain on 25 Sep 2009 01:26
blofelds_cat wrote: > wisdomkiller & pain wrote: > >> ArseClown wrote: >> >> > > (ArseClown is not me. He/she/it reposted my post) > Ah ok :) .... >>> Any truth to that? I just have the cables that came with it. I get >>> horrible upload speeds of just 20kbps. Also there is a Linksys VOIP >>> box inline, but that doesn't seem to have any effect. Expert advice >>> needed please. ta! .... >> What is the download speed you get? >> >> > > http://www.speedtest.net/result/572362928.png > That tells me 0.12 Mbits/sec, which equals to 120kbits for upload. Not rocket fast though ... but cable modem and dsl connections are known to have lower upload speeds. Download speed appears ok so far ... |