2 way audio

I need to set up a few PoE IP Cams in a pedestrian way around a building with 2-way audio. the Cams with the built-in speakers are not loud enough, so I need to attach external speakers to it. Can someone show me how this is done and what kind of speaker/mic should I buy to attach to it? do I...

Hi - just ordered the HIKVISION DS-2CD2635FWD-IZS 3MP Bullet Camera for the driveway and looking for something under the front porch and need a seamless way to receive alarms. I would like the front porch camera to have 2 way audio and unless I missed something I know that I have to install a...