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Land line refers to a telephone system that uses a physical wired connection—typically copper or fiber-optic cables—to transmit voice signals between users and the telephone network. Unlike mobile phones, which rely on cellular towers and radio waves, land lines provide stable, high-quality voice communication and are powered through the telephone line itself, allowing operation during power outages. Land lines are commonly used in homes, offices, and emergency services for their reliability, security, and consistent call quality. Though declining in popularity due to the rise of mobile and internet-based calling, land lines still play a vital role in many communication infrastructures.
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