Is it legal to have a landline and how does it work?

Yes, it is legal to have a landline phone. A landline works by transmitting voice signals over physical wires, typically copper or fiber optic cables, connected to a public switched telephone network (PSTN). When a call is made, the signal travels through these wires to connect to the recipient's phone, allowing for clear voice communication. Despite the rise of mobile phones, many people still use landlines for their reliability and call quality.