TOC-0 Multi-Channel Full-Duplex Intercom System Based on Public Network Transmission
Intercom systems are widely used in television broadcasting, program production, and live events. They are often integrated with other broadcasting equipment in TV studios, OB vans, stages, theaters, and EFP (Electronic Field Production) systems.
In TV production or stage performance monitoring, many participants, including directors, on-site directors, camera operators, lighting, sound, subtitles, big screens, hosts, commentators, and technical personnel from various departments, need to work together.
The intercom system organizes and connects all these individuals, facilitating the coordination and execution of the director’s instructions and team cooperation, ensuring smooth production.
The importance of intercom systems in large-scale broadcasting events is undeniable. Even in small to medium-sized outdoor performances, the need remains, although the scale is reduced.
Development of Intercom Systems
Early intercom systems often used Party-Line technology, where all participants could hear and speak on the same channel, similar to a conference call.
As the scale grew, with more participants and specialized roles, higher demands were placed on the intercom systems.
Multi-channel Party-Line systems and digital matrix intercom systems became possible, catering to larger group communications.
IP technology-based digital matrices now support long-distance connectivity between multiple studios.
Modern intercom systems generally comprise digital matrix systems, wired intercoms, wireless intercoms, TALLY indicators, and sometimes even broadcasting systems, walkie-talkies, and telephone access.