Karl Cunningham wrote: > On 6/19/2007 12:21 PM, Gus Wirth wrote: >> Some people may have poor phone line connections or be distant from >> the the central office, which for DSL has the same effect. It reduces >> the Signal/Noise Ratio (SNR) which forces a reduction in transmission >> speed to achieve the same Bit Error Rate (BER). I happen to have a >> good phone line connection and live close enough to the central office >> that I get full speed (1.5Mbps) all the time. >> >> Unfortunately, I don't know of any way to test a line beforehand to >> see how it will work. Well, actually I do but the phone company >> wouldn't let me do it :) I guess a primitive test would be to see if >> a 56k dial-up modem will give you full speed. If it can't, then I >> doubt DSL will either. > > I switched from cable modem to dslextreme.com about 6 months ago and > have been pretty happy. They had some promotion for the 5Mb/s service > with 8 static IPs. We're ~15K feet from the CO. At first the speed was > terrible. I complained and AT&T came out the same day. They pinged the > line, then removed several dead-end taps (left over from the days of > party lines). Speed is now consistently 525kB/s down and 85kB/s up. > > The connection drops for a few seconds, perhaps 15 times per day, and a > few 30-second dropouts per day. Not long enough to drop an ssh > connection but long enough to be aggravating...
That sounds mildly disappointing. Are you estimating the daily rate from your observations, or have you actually observed those numbers (and total daily events might be even worse?)? The 30s events sound _at least_ aggravating! >.. About once per month it > drops altogether and I have to cycle power on the modem to get it back. I wonder what causes those dropouts? Suppose that's inherent DSL behavior? --bad lines? --scheduled line/equipment work? Maybe there's a market for simple recording line monitors that fussy DSL customers can buy, eh? > One thing I haven't done yet is to have them set up reverse DNS for any > of the IPs. They said it's $25 per change, which sounds a bit steep. Where's Consumers Union, when you need them? :-( Regards, ..jim -- [email protected] http://www.kernel-panic.org/cgi-bin/mailman/listinfo/kplug-newbie
