telefonledning

Telefonledning refers to the physical wires that carry telephone signals. Historically, these were copper wires, often strung on poles or buried underground, connecting a telephone handset to a local exchange. The signals transmitted over these wires are analog electrical currents that represent voice. The development of telecommunications infrastructure relied heavily on these dedicated lines for individual phone connections.

As technology progressed, the concept of a telefonledning expanded to include the digital transmission of voice over various mediums. While copper wires are still in use in many areas, they have been supplemented and often replaced by fiber optic cables, which transmit data as light pulses. These modern cables can carry significantly more information at much higher speeds, enabling not only voice calls but also internet access and other data services.

The physical infrastructure of telefonledning, whether copper or fiber, forms the backbone of the public switched telephone network (PSTN). Despite the rise of mobile phones and Voice over IP (VoIP) technologies that transmit calls over the internet, traditional telefonledning remains crucial for connecting many homes and businesses to the network. Maintenance and upgrades of this network are ongoing efforts to ensure reliable communication.