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I am having trouble getting the two-way audio to work on my Hikvision DS-2CD2432F-IW. It is connected to a Hikvision DS-7608NI-SE/8 NVR with 2.3.10 firmware. The 2432 has V5.2.0 build 140721 firmware. Now, the two way audio works fine if I log into the camera directly via the web interface...