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  1. LongNg

    Long-range IP camera networking options

    Hi everyone, I’m planning to deploy an AI camera system to monitor two waste disposal sites. The goal is to detect individuals who dump trash illegally and extract footage as evidence for penalties. The requirement is to use IP cameras. +) The first site is about 2 km from the monitoring...
  2. LongNg

    Optical signal transmission

    Hi everyone I’m facing a strange issue and would like to ask for your advice. When I plug the SFP (fiber) module into the switch, all cameras and NVRs lose connection and there’s no signal at all. However, when I completely remove the SFP module from the fiber port, all cameras and NVRs...
  3. LongNg

    Optical signal transmission

    Hi everyone I’m facing a strange issue and would like to ask for your advice. When I plug the SFP (fiber) module into the switch, all cameras and NVRs lose connection and there’s no signal at all. However, when I completely remove the SFP module from the fiber port, all cameras and NVRs...
  4. LongNg

    Managed PoE switches randomly lose port power/signals

    Hi everyone, I’m having an intermittent issue with two PoE switches (each 16 ports, used to power IP cameras). Case 1: Sometimes, one PoE port suddenly loses both power and network link. When I move the cable to another port, it works normally. Case 2: On another switch (same 16-port model), all...
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