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Encyclopedia > Plain Old Telephone Service

Plain old telephone service, or POTS, are the services available from analogue telephones prior to the introduction of electronic telephone exchanges into the public switched telephone network. These services have been available almost since the introduction of the telephone system in the late 19th century. An analog or analogue signal is any variable signal continuous in both time and amplitude. ... The telephone or phone (Greek: tele = far away and phone = voice) is a telecommunications device which is used to transmit and receive sound (most commonly voice and speech) across distance. ... In the field of telecommunications, a telephone exchange (US: telephone switch) is a piece of equipment that connects phone calls. ... The public switched telephone network (PSTN) is the concentration of the worlds public circuit-switched telephone networks, in much the same way that the Internet is the concentration of the worlds public IP-based packet-switched networks. ... The telephone or phone (Greek: tele = far away and phone = voice) is a telecommunications device which is used to transmit and receive sound (most commonly voice and speech) across distance. ...


The system was originally known as the Post Office Telephone Service or Post Office Telephone System in many countries. The term was dropped as telephone services were removed from the control of national post offices. Small-town post office and town hall in Lockhart, Alabama A post office is a facility (in most countries, a government one) where the public can purchase postage stamps for mailing correspondence or merchandise, and also drop off or pick up packages or other special-delivery items. ...


POTS services include:


With the advent of electronic telephone exchanges and computerisation during the 1970s and 1980s, a raft of new network services became available. These had been termed PANS for pretty advanced network (or new) services by some in the industry, although that term has never really caught on. The services offered include: Duplex, meaning double or twofold, may refer to: Duplex, a telecommunications term referring to two-way simultaneous transmission and reception A duplex is the U.S. name for a particular type of housing. ... A dial tone is a telephony signal used to indicate that the telephone exchange is working and ready to accept a call. ... A ringing signal is a telephony signal that tells the user that there is an incoming call. ... Directory assistance (in the UK, directory enquiries) in telecommunications is a telephone call one can make to find out a specific phone number of a residence or business. ... Long distance in telecommunications, refers to telephone calls made outside a certain area, usually characterized by an area code outside of a local call area. ... A conference call is a telephone call where the calling party wants to have more than one called party listen in to the audio portion of the call. ...

and a number of other similar services. Voicemail (or voice mail; abbreviated v-mail or vmail) is a specific application of an interactive voice response system. ... Caller ID (Caller Identity Display or CID) is a telephony intelligent network service that transmits the callers telephone number to the called partys telephone equipment during the ringing signal or when the call is being set up but before the call is answered. ... Call waiting, in telephony, is a feature on some telephone networks. ... To meet Wikipedias quality standards and make it easier to understand, this article or section may require cleanup. ...


The new services were made possible by the introduction of the support network for the ISDN as well as raised consumer expectations from services offered on mobile telephones. Integrated Services Digital Network (ISDN) is a type of circuit switched telephone network system, designed to allow digital transmission of voice and data over ordinary telephone copper wires, resulting in better quality and higher speeds than available with analog systems. ... Consumers are individuals or households that consume goods and services generated within the economy. ... Cellular redirects here. ...


One thing to note is that while modems capable of operating at up to 56 kbit/s are available to most users, most telephone companies do not guarantee service to that speed on POTS lines as these were not meant to be Data lines. Unfortunately, this is not normally spelled out explicitly leading to unnecessary repair calls. A modem (a portmanteau word constructed from modulator and demodulator) is a device that modulates a carrier signal to encode digital information, and also demodulates such a carrier signal to decode the transmitted information. ... Data is the plural of datum. ...


See also

RJ-11 (Registered Jack 11) is a physical interface often used for terminating twisted pair type cables. ... The 25 pair color code is a color code used to identify individual conductors in a kind of electrical communication wiring known as twisted pair cables. ... Asymmetric Digital Subscriber Line (ADSL) is a form of DSL, a data communications technology that enables faster data transmission over copper telephone lines than a conventional modem can provide. ... The term filter may refer to: A device to separate mixtures. ... 25 Pair Color Code Chart 10BASE-T UTP Cable Twisted pair cabling is a common form of wiring in which two conductors are wound around each other for the purposes of cancelling out electromagnetic interference known as crosstalk. ... A Foreign Exchange Office, or FXO, is a telephone interface that receives POTS, or Plain old telephone service. ... A Foreign Exchange Station, or FXS, is a telephone interface which provides battery power, sends dialtone, and generates ringing voltage. ...

External links


  Results from FactBites:
 
Plain old telephone service - Wikipedia, the free encyclopedia (288 words)
Plain old telephone service, or POTS, are the services available from analogue telephones prior to the introduction of electronic telephone exchanges into the public switched telephone network.
These services have been available almost since the introduction of the telephone system in the late 19th century.
The term was dropped as telephone services were removed from the control of national post offices.
Plain old telephone service - Wikipedia, the free encyclopedia (288 words)
These had been termed PANS for pretty advanced network (or new) services by some in the industry, although that term has never really caught on.
The new services were made possible by the introduction of the support network for the ISDN as well as raised consumer expectations from services offered on mobile telephones.
One thing to note is that while modems capable of operating at up to 56 kbit/s are available to most users, most telephone companies do not guarantee service to that speed on POTS lines as these were not meant to be Data lines.
  More results at FactBites »


 

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