Hi Guys. I have a dedicated wired network for my 3CX network. 3CX server on its own machine, no other computers on the network, only VoiP devices, an ADSL router, a dumb switch and a Bullet WiFi Access Point. Now, all of my AASTRA 480i phones are on the physical wired network with the server, and they all have a 1 second delay when dealing with outside lines. I also have a SNOM M3 basestation on the wired network with 3 extensions hanging off it. No lag whatsoever. I also have a SNOM M3 basestation half a mile away running over a 54Mbps WiFi link with 5 extensions hanging off it. No lag whatsoever there. From this i conclude that my only issue is with the AASTRA 480i phones. Does anybody have any suggestions at all?