On Friday 10 October 2014 02:07:41 Gregg Eshelman did opine And Gene did reply: > On 10/9/2014 12:36 PM, Gene Heskett wrote: > > Dunno, I suppose if one wanted to test the quality of a new and > > unknown quality cable it could be useful. But in troubleshooting > > existing cables, I have yet to see anything work slicker than a good > > TDR. You can have a bullet burnout someplace in a 2100 foot run of > > high powered coax, take a look at it on the TDR and tell the tower > > crew within 5 feet of where to take it apart. The 5' error? > > Probably the operator, not knowing the exact propagation velocity of > > that particular line & using a SWAG instead. > > Five feet is good.
Yup, but that 5 feet was 475 feet from my test hookup. At the tower top TBE. > How about 500 feet or more? The line my DSL is > hooked up to has always been real iffy. Supposedly I'm able to use any > modem I want but only the ones provided by the ISP will work - at my > house. The commercial TDR's can go 10 to 20 thousand feet. > I've taken them to the ISP's office and to homes of other employees of > the ISP and *there* they'll work. > > Almost every day, sometimes twice a day, I have to turn the modem off > and on to reboot it so data will download again. > > Recently it just completely quit. One of their techs checked the line > and found the pair I was on had a dead short. I once had a total open of one half a pair. Net was not effected, but no phone. > Instead of replacing that whole piece of defective multi pair line, he > just swapped wires at both ends of that section to a different pair. > Nevermind I still have the same problem as before and it's steadily > getting worse. > > I expect that when this pair shorts out they'll just move it to another > unused pair, if by then there is a "good" pair still unused. > > I know that this kind of suspended cable is expensive, but poor quality > of service costs even more. In any business, when you have broken > equipment, you repair or replace it ASAP because letting a problem go > will cost a lot more money. > Sounds like you are dealing with verizon. I vote with my wallet nearly 4.5 years ago, never looked back. Now I have phone and net at least till the cable batteries die. > Even more fun was the day that simultaneously a squirrel and a backhoe > operator cut both sides of a redundant loop separated by many miles, > cutting off several entire towns from the net until they got it > repaired. Still more fun was the day a squirrel decided a fiber optic > line with 100 or so strands would make good nest material. One of their > new hires got to learn how to splice fiber on his 3rd day at work. I'll bet he believed in several colors of magic besides the usual black by the end of that day. :) Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> US V Castleman, SCOTUS, Mar 2014 is grounds for Impeaching SCOTUS ------------------------------------------------------------------------------ Meet PCI DSS 3.0 Compliance Requirements with EventLog Analyzer Achieve PCI DSS 3.0 Compliant Status with Out-of-the-box PCI DSS Reports Are you Audit-Ready for PCI DSS 3.0 Compliance? Download White paper Comply to PCI DSS 3.0 Requirement 10 and 11.5 with EventLog Analyzer http://pubads.g.doubleclick.net/gampad/clk?id=154622311&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
