TOC-0 Multi-Channel Full-Duplex Intercom System Based on Public Network Transmission
Convenience of Wireless Intercom Systems:
To address usability issues, wireless intercom systems have gradually been introduced.
Mobile camera positions using stabilizers and drones significantly enhance the dynamic and visual impact of the footage.
In small to medium-sized settings such as district-level TV studios, small OB vans, temporary stages, shows, conferences, festivals, cultural performances, and sports events, the need for wireless intercom systems is more urgent.
Wireless intercoms eliminate the need for cable installation and are not limited by spatial distance, offering flexibility and convenience to on-site staff. They are easy to use and save considerable time.
Technical Limitations of Wireless Intercom Systems:
Wireless intercom systems are limited by technical factors, with sound quality and communication bandwidth being directly related.
The number of calls is also proportional to the communication bandwidth, necessitating larger bandwidth wireless frequencies. However, the communication distance is inversely proportional to bandwidth, restricting the use of broader bandwidth technologies.
The current wireless frequency bands are crowded, and there are no international or national standards for wireless intercom systems, so they must find usable frequencies within existing systems.
Higher frequencies have poorer obstacle penetration abilities. Wireless intercom products using 1.9GHz, 2.4GHz, and similar technologies cannot be obstructed, turning them into “visual intercoms” — if you can’t see the other party, you can’t communicate.
Due to the multi-path real-time communication characteristics of live events, they cannot be designed based on public networks or existing technologies. 3G, 4G, even 5G, and WiFi cannot provide the wireless transmission capacity for on-site multi-path group communication.
The public network’s best-effort service characteristic offers no guarantee, making it unimaginable for smooth on-site communication to depend on the telecom network’s signal, which may be unusable in case of poor signal or too many audience members using phones or the internet.