I am very interested in purchasing a Dahua Tribrid DVR. The ability to reuse some existing analog cameras and try the newer CVI type of cameras and IP cameras to boot.
I noticed that there are generally 1 audio input and at the most 4 audio inputs on the Tribrid DVR's.
I need to have audio with video on my system. I looked at the setup for a few models and there is an internal and audio input option for each camera. I can not find a HDCVI camera with built in mic except for PTZ models. If you can port audio inputs to multiple channels that would work but I can not verify if that is possible, eg. audio input 1 connects to channel 1 and 2 audio input 2 connects to channel 3 and 4 and different variations.
also can someone give an explanation of "reuse audio in and out " for 2 way comms
thanks in advance.