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Landline service is typically provided through the outside plant of a telephone company's central office, or wire center. The outside plant comprises tiers of cabling between distribution points in the exchange area, so that a single pair of copper wire, or an optical fiber, reaches each subscriber location, such as a home or office, at the network interface.
For example, a telephone number in North America consists of a three-digit area code, a three-digit central office code, and four digits for the line number. If the numbering plan area does not use an overlay plan with multiple area codes, or if the provider allows it for other technical reasons, seven-digit dialing may be permissible for calls ...
A wire center is the area served by a particular switch or central office. A concentrator is a device that concentrates traffic, be it remote or co-located with the switch. An off-hook condition represents a circuit that is in use, e.g., when a telephone call is in progress.
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Sheraton's 800‑325‑3535, one of the notable early adopters in late 1969, was hard-wired into St. Louis area code 314; [6] 1‑800‑HOLIDAY at that time could not be a U.S. number if the 1‑800‑465 prefix was hard-wired to Thunder Bay's area code 807. Any attempt to call a foreign 1‑800 gave a pre-recorded error, "the number you have ...
The maximum resistance of the loop is 1,700 ohms, which translates into a maximum loop length of 18,000 feet or 5 km using standard 24-gauge wire. (Longer loops are often constructed with larger, lower-resistance 19-gauge wire and/or specialized central office equipment called a loop extender. They may be 50,000 feet [15 km] or more.)
Between 2016 and 2021, only about 30 office-to-residential projects came online each year, according to a July 2023 Deloitte study. And as of the time of the study, there were only 217 such ...
Home office deductions only apply to small business owners who are self-employed. If you do freelance work unrelated to your regular job at home, you might qualify. The rules are strict, though ...