If the network goes down, video recording will move to the onboard SD card in the IP camera. Upon network recovery, the recorded video will return to the NVR.

Specification：

ANR (Automatic Network Replenishment): If the network connection between IPC and NVR fails or if there is packet loss or jitter, it may cause video data loss. In this case, front-end encoders or IP cameras (using built-in TF cards) can store videos. Front-end storage is not affected by the network, allowing for buffering storage. When the network is reconnected, the back-end NVR can transmit the video stored in the front-end cache to the back-end.

ANR technology is not a standalone device function but rather is achieved through co-operation between front-end IPC and back-end NVR.

Effects：

The role of ANR is to combine local storage with network storage technology to solve the problem of video loss during network failure.

Facing challenges：

Technical stability and reliability: ANR technology must ensure video storage during network failures, therefore requiring high standards of technical stability and reliability.