North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: Sonet protection usage
On Tue, 25 July 2000, Danny McPherson wrote: > > Of course, the usual failure mode is backhoe fade, not electronics. > > In which case, that APS circuit was cut along with the rest. > > Of course, backhoes don't normally work inside PoPs, which is the application > of APS I was referring to. Routers do fail though (often more than links), > and APS has been demonstrated to work relatively well for protecting against > such failures. Although backhoes are often publically identified as the cause of problems, it turns out 71% of the reportable telephone outages last quarter were due to problems inside the carrier's control (i.e. inside the C.O.) according to ATIS/NRSC's calaculations. CO's are dangerous places for network equipment.
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