two-way

I have installed in my house currently a two-wire video intercom DS-KIS701 and just recently the two-way audio function decided to stop on both mine and my wife’s phone. Nothing has changed apart from hik-connect app updates and iOS updates. Any help if much appreciate.

This is my first post here, as I'm desperately searching for answers anywhere I can. I am a professional installer, and I have a client that wants outdoor cameras that handle 2 way audio. I've come across Hikvision's 360 fisheye camera, played around with it, and I was very unimpressed with the...