Communication Media

Copper Cable  

Benefits:  

- Less expensive and easier to install.  

- Flexible and simple to terminate.  

Drawbacks:  

- Performs poorly with small charges.  

- Susceptible to electromagnetic interference.  

Fibre‑Optic Cable  

Benefits: 

- Provides greater bandwidth.  

- Improved security.  

- Lightweight and easy to install.  

- Requires fewer signal boosters, making it ideal for long‑distance communication.  

Drawbacks:  

- Needs costly optical transmitters and receivers.  

PSTN (Public Switched Telephone Network)  

- Refers to all interconnected telephone networks.  

- Channel: Established between two endpoints for the duration of a call via circuit switching.  

- Resilience: Lines remain active even during a power outage.  

- Communication: Supports bi‑directional transmission.