local home phone service

An old rotary telephoneA basic modern telephoneThis article is about telephone technology. For the game of telephone, see Telephone (game). For the band, see Téléphone.

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. Most telephones operate through transmission of electric signals over a complex telephone network which allows almost any phone user to communicate with almost any other.

Touch-tone telephone

Introduction

A touch-tone telephone keypad

An elementary telephone system would consist of three elements:

the equipment located at each subscriber which converts sound to electrical signals and back, and which allows the subscriber to answer or initiate a call,a central switching facility which interconnects all the subscriberswiring or other means to connect the subscriber to the central switching facility.

There are three principal ways a subscriber may be connected to the telephone network:

Historically, and still very commonly, by dedicated physical wire connections run in overhead or underground cables;By radio, as in a cordless, cellular, satellite or radiotelephone andBy voice over internet protocol (VoIP) telephones, which use broadband internet connections. Time Warner Cable. Home baking supplies cleaning supplies carpet cleaning supply bar supplies wholesale packaging supplies scooby doo party supplies beads supplies medical record supply communion supplies power sprayer diesel power generator power connectors nuclear power polycom power supply self powered radio chair mobility power pride credit repair services telephone service credit card merchant services cable internet service credit card counseling services dsl internet service provider serviced office senior dating service rehabilitation services credit card counseling service ecommerce hosting services christian dating free online services web site services hosting service provider limousine service los angeles office cleaning services limo services chicago retail merchant services emergency data recovery services best dating services printing service san francisco e mail fax service site submission service limo services in washington dc service franchise internet banking services business card services