ISP Information:
Within the context of a computer program, this refers to any operation that attempts to access an area of memory or perform an instruction that is not within the rules of the computer architecture or computer programming language.
ISP Glossary:
Illegal - Frank@Nospam.com wrote: Just last week carpet installers cut my cable service, so I was out of Vonage for two days. I tired plugging everything into my remaining cable outlet that was still working but the signal wasn't sufficient there for the cable modem. With DSL you're a little better off, but still dependent upon household electrical power being up and running.Then PAT wrote: [TELECOM Digest Editor's Note: Couldn't the carpet installers just as easily have sliced your telephone line and left you without SBC service for a couple days? ...And Frank@Nospam.com responded: No. Telco inside wiring is normally twisted pair well up inside the wall, not along the baseboard.Not necessarily: it depends on the age of the building.In the early years of the 20th century, few buildings were prewired for anykind of electrical service. Wiring in these buildings was almost alwaysinstalled after construction was completed, often surface-mounted.Sometime around 1910 or 1920, builders began prewiring new residentialand commercial buildings with hidden electric power and telephonewiring (a hallmark of the arts-and-crafts bungalow was a wood-framedtelephone alcove in the hall, complete with a 42A block discretelyplaced nearby). This pattern continued through WWII, and well intothe postwar home-construction boom of the 50s and 60s.By the late 60s, cable television was gaining popularity. In existingbuildings, cable wiring was often surface-mounted, either on theoutside of the building or internally, in basements and attics, alongbaseboards, or under carpets.Cable television companies began offering prewire service for newconstruction. At the outset, most cable companies did the prewiringwork themselves because the traditional electrical contractors of theday simply couldn't understand why cable companies insisted on suchthings as 75-ohm coax, 100% shielding, and home-run wiring. But astime passed, electrical contractors learned the requirements for coaxwiring, and eventually took over the job of prewiring new buildings.Today, virtually all new residential buildings, and most newcommercial buildings, are prewired for coax during initialconstruction, often by the same contractors that install power andtelephone wiring.Note the shift in terminology in the previous paragraph: coax wiringinside buildings is no longer "cable TV" wiring. It's all genericcoax, available for use by any video provider: cable TV company,"private cable" company, OVS operator, MMDS operator, backyard-dishinstaller, or DBS installer. Even if a cable TV company originallyinstalled it, competitive video providers now have the right to useit. .So it's not necessarily true that coax wiring is normally exposed,while telco wiring is hidden inside walls. It all depends on the ageof the building.Footnote: many college towns have "student ghettos": blocks ofpre-WWII frame houses that have been chopped up into studentapartments. Coax wiring in such buildings is often run around theoutside of the building -- partly because it's easier to install thatway; partly because it's easier to make the once-a-semester changeswhen students move; and partly to deter signal theft (wiring onoutside walls is more difficult for students to tamper with, andeasier for the cable company to inspect). Cable companies call theseinstallations "MUFH jobs" (as in Multi-Unit Frame House), aptlypronounced "muff job."Neal McLainnmclain@annsgarden.com
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