It doesn't matter, KAD706 is just like regular network switch. You congifure what outdoor calls which indoor using and programming IP adress.
On every indoor unit under " (Main) Door station IP address" you enter IP address of outdoor unit you want to receive call from.
Only important thing...
don't know who sold this configuration to you but you can only connect two outdoor unit's to KAD706. First must be connected to ch6, and second can't have more that two submodules. Even the second outdoor is not recomended.
Three outdoor station won't work. You'll need one more...
What's your DNS? Use Google's 184.108.40.206. Try it with DHCP on, maybe you have problems with IP address.
Change port on your router( where DVR is connected).
This is two of their servers, try with them.
I have a situation where i record stream from camera to NVR. Camera has SD card in her self.
When there is a lost comunication between cam and NVR, camera records on her self.
How can I set to transfer that part of playback when there was no connection between cam and NVR to NVR HDD?