land line, landline (noun)

a telephone line that travels over terrestrial circuits

"a land line can be wire or fiber optics or microwave"

landline (Noun)

A fixed telephone communications cable.

landline (Noun)

a telephone connected by such a fixed wire, specifically not wireless/mobile.

Landline

A landline telephone refers to a phone which uses a solid medium telephone line such as a metal wire or fiber optic cable for transmission as distinguished from a mobile cellular line which uses radio waves for transmission. In 2003, the CIA reported approximately 1.263 billion main telephone lines worldwide. China had more than any other country at 350 million and the United States was second with 268 million. The United Kingdom has 23.7 million residential fixed landlines. In 2008, the world had 1.27 billion fixed line subscribers.

Landline

A landline (land line, land-line, main line, home phone, fixed-line, and wireline) is a telephone connection that uses metal wires or optical fiber telephone line for transmission, as distinguished from a mobile cellular network, which uses radio waves for signal transmission.