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Regular network switches and surveillance video switches have significant differences in design goals, hardware configuration, and data optimization. The former focuses on general data transmission, while the latter is specifically designed for video stream stability.

Core Functions and Application Scenarios  

- Network switches: Mainly used to expand network connections, providing ports for devices such as computers and servers. They focus on meeting general data transmission needs, such as file downloads and web browsing.  

- Surveillance switches: Specifically designed for security systems, optimized for video stream transmission to ensure real-time and smooth monitoring footage, supporting multicast and video priority settings.  

Hardware and Design Differences  

1. Buffer size: Surveillance switches are typically equipped with larger buffers (e.g., 4 MB or more) to handle burst traffic from video streams and prevent frame freezes; regular switches have smaller buffers and are prone to packet loss when handling burst video traffic.  

2. Port configuration: Surveillance switches often come with Gigabit optical uplink ports, facilitating long-distance fiber transmission to the equipment room; regular switches mostly use electrical ports with fewer optical ports.  

3. Material and heat dissipation: Surveillance switches often operate in harsher environments and typically feature metal casings or even aluminum casings for better heat dissipation; regular network switches usually have standard metal or even plastic casings.  

Performance and Functional Features  

1. PoE power supply: Surveillance switches often have built-in PoE power modules, supplying power directly to cameras via network cables to simplify wiring; regular switches usually lack this function.  

2. Video stream optimization: Surveillance switches support multicast suppression and flow control to ensure real-time video performance and stability; regular switches focus on general network management functions such as VLANs and routing.  

3. Bandwidth design: Surveillance switches prioritize uplink bandwidth (often with Gigabit optical ports), with access ports adapted to camera bitrates; regular switches mainly feature all-Gigabit electrical ports, focusing on high-speed internal network interconnection.  

Additional Notes  

Surveillance video switches can be used as regular network switches, but at a higher cost. When regular switches are used in surveillance systems, insufficient buffer or bandwidth may cause frame freezes or black screens.  

Recommendation  

When building a network, it is recommended to use surveillance video switches for connecting cameras and regular network switches for connecting terminals such as computers, then connect all to a core router for optimized performance.