v17.4/18.2, NVR v8.9, Network Congestion, condition to trigger the error - 20201203


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Question:
What is the exact condition that triggers network congestion error on NVR/VMS?

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Answer:
It only supports GV and A/T/EBD series cameras in the following condition. Please review your network environment when you receive the pop-up message.

For GV cameras:
a. Buffer is full due to bandwidth congestion.
b. Sequence number of frame and frame is not continuous over 20 times.
c. Time between two frame is longer than 2 sec.

For A/T/EBD series cameras (GV_IP_Devices):
a. Time between two frame is longer than 2 sec.

It does not support third party cameras currently.

Reference:
[ UVS - 202011035005 ] VMS, network congestion error, trigger condition, turn off
[ EVS - 202011185004 ] VMS v17.4, network congestion