Communication systems encompass a broad category that includes different technological tools and systems. These systems were developed to meet communication needs, ensure information transfer and facilitate interaction.

Telephone systems are divided into various subcategories such as Information Communication Networks, TV Systems, Music Broadcasting – Announcement System, Paging System, Central Time System, Intercom Systems. Each communication system is specifically designed to meet a specific communication need.

These systems are widely used to ensure effective and rapid communication, increase security, and generally improve the quality of work or life.