A landline, main line or fixed-line is a telephone line A telephone line or telephone circuit is a single-user circuit on a telephone communications system. Typically this refers to the physical wire or other signaling medium connecting the user's telephone apparatus to the telecommunications network, and usually also implies a single telephone number for billing purposes reserved for that user which travels through a solid medium, either metal wire A wire is a single, usually cylindrical, elongated string of metal. Wires are used to bear mechanical loads and to carry electricity and telecommunications signals. Wire is commonly formed by drawing the metal through a hole in a die or draw plate. Standard sizes are determined by various wire gauges. The term wire is also used more loosely to or optical fibre An optical fiber is a glass or plastic fiber that carries light along its length. Fiber optics is the overlap of applied science and engineering concerned with the design and application of optical fibers. Optical fibers are widely used in fiber-optic communications, which permits transmission over longer distances and at higher bandwidths (data. This is distinguished from a mobile cellular line A mobile phone or mobile is a long-range, electronic device used for mobile telecommunications (mobile telephony, text messaging or data transmition) over a cellular network of specialized base stations known as cell sites. In addition to the standard voice function, current mobile phones may support many additional services, and accessories, such, where the medium used is the airwaves Radio waves are electromagnetic waves occurring on the radio frequency portion of the electromagnetic spectrum. Landlines usually cost less than cellular lines and provide better voice quality, and are used when there is no need for mobility or where cellular service is unavailable. A land line is also used to increase the security of communications, as it cannot be intercepted by a receiver without physical access to the line. (This does not, however, mean that a telephone company A telephone company provides telecommunications services such as telephony and data communications. Most of the largest telcos, whatever their origins, are or were at one time nationalized or state-regulated monopolies. These monopolies are often referred to, primarily in Europe, as PTTs will not send the call over the air on some point in the journey.) In 2003, the CIA The Central Intelligence Agency is a civilian intelligence agency of the United States government reported approximately 1.263 billion main telephone The device operates principally by converting sound waves into electrical signals, and electrical signals into sound waves. Such signals when conveyed through telephone networks — and often converted to electronic and/or optical signals — enable nearly every telephone user to communicate with nearly every other worldwide. Graphic symbols used lines worldwide. China China has one of the world's oldest and continuous civilizations, consisting of states and cultures dating back more than six millennia.[citation needed] It has the world's longest continuously used written language system,[citation needed] and is viewed as the source of many major inventions. Historically, China's cultural sphere has extended had more than any other country, at 350 million, and the United States The United States of America is a federal constitutional republic comprising fifty states and a federal district. The country is situated mostly in central North America, where its 48 contiguous states and Washington, D.C., the capital district, lie between the Pacific and Atlantic Oceans, bordered by Canada to the north and Mexico to the south was second with 268 million - this compared with 219.4 million cellular telephones, a number which is expected to exceed the landline number within a few years.
In 2008 there were 1,270 million fixed line subscribers in the world.[1]
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Fixed phone
A fixed phone line (ie,one that is not a mobile phone A mobile phone or mobile is a long-range, electronic device used for mobile telecommunications (mobile telephony, text messaging or data transmition) over a cellular network of specialized base stations known as cell sites. In addition to the standard voice function, current mobile phones may support many additional services, and accessories, such line) can be hard-wired A wire is a single, usually cylindrical, elongated string of metal. Wires are used to bear mechanical loads and to carry electricity and telecommunications signals. Wire is commonly formed by drawing the metal through a hole in a die or draw plate. Standard sizes are determined by various wire gauges. The term wire is also used more loosely to or wireless Wireless communication is the transfer of information over a distance without the use of electrical conductors or "wires". The distances involved may be short or long (thousands or millions of kilometers for radio communications). When the context is clear, the term is often shortened to "wireless". Wireless communication is.
Fixed wireless refers to the operation of wireless devices or systems in fixed locations such as homes and offices. Fixed wireless devices usually derive their electrical power from the utility mains electricity, unlike mobile wireless or portable wireless which tend to be battery-powered In electronics, a battery or voltaic cell is a combination of many electrochemical Galvanic cells of identical type to store chemical energy and to deliver higher voltage or higher current than with single cells. Although mobile and portable systems can be used in fixed locations, efficiency and bandwidth are compromised compared with fixed systems. Mobile or portable, battery-powered wireless systems can serve as emergency backups for fixed systems in case of a power blackout or natural disaster.
The technology for wireless connection to the Internet The Internet is a global system of interconnected computer networks that use the standardized Internet Protocol Suite . It is a network of networks that consists of millions of private and public, academic, business, and government networks of local to global scope that are linked by copper wires, fiber-optic cables, wireless connections, and is as old as the Net itself. Amateur radio operators began "patching" into telephone lines with fixed, mobile, and portable two-way voice radios in the middle of the 20th Century. A wireless modem A wireless modem is a type of modem which connects to a wireless network instead of to the telephone system. When you connect with a wireless modem, you are attached directly to your wireless ISP and you can then access the Internet works something like an amateur-radio "phone patch," except faster. High-end fixed wireless employs broadband modems Broadband in telecommunications refers to a signaling method that includes or handles a relatively wide range of frequencies, which may be divided into channels or frequency bins. Broadband is always a relative term, understood according to its context. The wider the bandwidth, the greater the information-carrying capacity. In radio, for example, that bypass the telephone system and offer Internet access hundreds of times faster than twisted-pair hard-wired connections or cell-phone modems.
Dedicated lines
The term landline is also used to describe a connection between two or more points that consists of a dedicated physical cable, as opposed to an always-available private link that is actually implemented as a circuit in a wider switched system (usually the public switched telephone network The public switched telephone network is the network of the world's public circuit-switched telephone networks, in much the same way that the Internet is the network of the world's public IP-based packet-switched networks. Originally a network of fixed-line analog telephone systems, the PSTN is now almost entirely digital, and now includes mobile). So-called leased lines A leased line is a symmetric telecommunications line connecting two locations. It is sometimes known as a 'Private Circuit' or 'Data Line' in the UK. Unlike traditional PSTN lines it does not have a telephone number, each side of the line being permanently connected to the other. Leased lines can be used for telephone, data or Internet services are invariably of the latter type; the implication of a landline in this context is one of security and especially of survivability In engineering, survivability is the quantified ability of a system, subsystem, equipment, process, or procedure to continue to function during and after a natural or man-made disturbance; e.g. nuclear electromagnetic pulse from the detonation of a nuclear weapon. For example, a military headquarters might be linked to front-line units "by landline" to ensure that communication remains possible even if the conventional telephone network is damaged or destroyed. This was the case in the Second World War World War II, or the Second World War , was a global military conflict which involved a majority of the world's nations, including all of the great powers, organized into two opposing military alliances: the Allies and the Axis. The war involved the mobilization of over 100 million military personnel, making it the most widespread war in history, in which the RAF Fighter Command Fighter Command was one of three functional commands that dominated the public perception of the Royal Air Force for much of the mid-20th century. It was formed in 1936 to reflect the fact that as the RAF expanded prior to World War II, more specialised control of each type of aircraft: fighter, bomber and maritime patrol was needed had its radar stations and aerodromes connected to headquarters by land lines; its more mobile opponent, other telecommunications experts have at times seen the more popular use as a misuse of the word. As a consequence, in professional contexts "fixed line" or "wireline" are more commonly used words than "landline." "Landline Check" refers to calling a landline and checking to see if there is connectivity, to make sure emergency landline phones are working.
See also
- Local loop In telephony, the local loop is the physical link or circuit that connects from the demarcation point of the customer premises to the edge of the carrier or telecommunications service provider's network. At the edge of the carrier network in a traditional PSTN (Public Switched Telephone Network) scenario, the local loop terminates in a circuit
- Last mile The "last mile" is the final leg of delivering connectivity from a communications provider to a customer. The phrase is therefore often used by the telecommunications and cable television industries. The actual distance of this leg may be considerably more than a mile, especially in rural areas. It is typically seen as an expensive
- Telephone The device operates principally by converting sound waves into electrical signals, and electrical signals into sound waves. Such signals when conveyed through telephone networks — and often converted to electronic and/or optical signals — enable nearly every telephone user to communicate with nearly every other worldwide. Graphic symbols used
References
- ^ Measuring the Information Society: The ICT Development Index. International Telecommunication Union. 2009. pp. 108. ISBN 9261128319. http://www.itu.int/ITU-D/ict/publications/idi/2009/material/IDI2009_w5.pdf.
Categories: Telephony Categories: Telecommunications | Electronic engineering | Local loop Categories: Telephony | Network architecture | Network access | Telecommunications infrastructure | Communication circuits
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Program Landline Year of Production 2005 Duration 16mins
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Wed, 29 Jul 2009 05:47:36 GM
Remember those three big, fat books with the names and phone numbers of thousands of people that MTNL used to dutifully send out every year? The phone directory has almost become extinct in the modern age of the cell phone. ...
Q. I have my friends address but lost his phone number. Is there a FREE website or search that I can use to find the landline number associated with the address (through utility bills, etc). Thanks in advance for your help! I tried those two and couldn't find it. Any other more powerful free search engines? Thanks!
Asked by Jared - Thu Jun 18 02:06:50 2009 - - 3 Answers - 0 Comments
A. No. There's no way you can do a reverse lookup on a cell phone number for free. Those sites have to pay for that information. That's why they charge. I found a site that will let you do a reverse lookup. But it's paid. The information they provide is accurate and worth the price. I'll leave a link to the site below. hope this helps...
Answered by andy L - Thu Jun 18 12:00:14 2009
