So I have a weird problem I have an existing network that is functioning fine. I just bought a new phone system and we are trying to network it for Voicemail to email feature. I am trying to assign the IP address 192.168.0.40 to the phone system. When I ping the IP address (without the phone system attached) from the server or run an ip scanner .40 is coming up with no device, so I know it’s not in use. When I plug the phone system into the network I can pin the .40 and get two replies then it says “Destination Host unreachable”. I have created a mini network with just the phone system and my laptop and I can ping the .40 and get replies all day but as soon as I plug into the existing network, again two replies then failures. I have removed my firewall from the network to full that out, I have also logged into my managed switch and changed the port from 1 gb to 100mbps and still no change. Any idea’s?