Article: Understanding Network Cameras (IP Cameras)
A network camera, often called an IP camera (Internet Protocol camera), is a digital video camera that transmits and receives data over a computer network or the internet. Unlike traditional analog CCTV cameras, which require a direct connection to a Digital Video Recorder (DVR), network cameras have built-in processing power and web servers, allowing them to function as independent devices on a network.
10.5 ONVIF Profile Compatibility
- Profile S: Streaming.
- Profile G: Recording and storage.
- Profile T: Advanced streaming and metadata.
- Ensure both camera and receiver support same profile.
5.1 Ethernet (RJ45)
- Cat5e: 100 Mbps, up to 100 m (328 ft).
- Cat6: 1 Gbps, up to 100 m.
- Cat6a / Cat7: 10 Gbps for high-resolution multi-camera links.
5.2 Power over Ethernet (PoE)
- IEEE 802.3af (PoE): 15.4W – basic cameras.
- IEEE 802.3at (PoE+): 30W – PTZ, heaters.
- IEEE 802.3bt (PoE++): 60–100W – high-power cameras.
- Midspan / Injector if switch doesn’t support PoE.
3.2 LAN Link (Switched Network)
- Camera connected to a switch with other devices.
- Managed via IP addresses, VLANs for security.
- Allows multiple viewers and recording servers.