Hi all, i have just installed my SPA9000 for the 100th time! it kept crashing after a day or so and i could not make calls or receive calls until i did a reboot and that would last another few hours. I had set the PBX a static IP settings and i think it may have been wrong with giving it 2 public DNS server IP's of my broadband provider. in the end i have now set the PBX to a Dynamic IP address. I would like to set it a static IP adddress so i will do a clean reinstall of the PBX and 2 SPA942 phones. when i run the Linksys wizard and when i click on the static IP address for the PBX i am presented with a number of options. i am thinking i leaveing the DNS entries blank or if i am forced to choose one i will set it to the IP of the router. so is this a valid PBX static configuration: static IP= 192.168.1.21 Default gateway = 192.168.1.1 DNS prim = leave blank DNS sec = leave blank also when using the wizard i beleive the phones are given 2 dynamic IP address. i wonder should i also give these static IP addesses via the web interface to the phones. again assign a IP address outside the DHCP range of router and assign just the default gateway and leave DNS fields blank> comments? maybe i should also set the primary DNS of both PBX and 2 phones to be the same IP of router (default gateway)? FYI: my network config is: Dlink G624T router (port 1) --> 8-port Linksys Switch --> PC, Laptop, printer, scanner and a windows small business server Dlink G624T router (port 2) --> Linksys SPA9000 Dlink G624T router (port 3) --> Linksys SPA942 Dlink G624T router (port 4) --> Linksys SPA942 NAT issues: i never had to do anything with NAT on the router to allow voice calls. it seems to allow incoming and out going calls magically!! maybe i should still physically set this on the router. and i then think i need to enable yes to both â€˜NAT Mapping Enableâ€™ and â€˜NAT Keep Alive Enableâ€™ in the line tabs of the PBX. kind regards, Will.