Hello, I am new to 3CX, but have nearly managed to complete my installation without help until now. I currently have 3CX V8.10824 on a clean install of Win7 Ultimate (32 Bit quod core 4 gig ram) I have configured a Linksys PAP2, and have it working with 2 x analogue phones. I have configured a Linksys SPA 3102 as my PSTN gateway, and have it working. I have subscribed to a VOIP provider and also have that setup and working. I even have 2 soft phones working on my laptop and Iphone. Where I am totally stuck is with my Cisco 7940 phones. I have converted them to SIP, without any issues. I have setup the TFTP server so when the phones bootup they pull their default.cnf and sipxx:xx:xx:xx:xx:.cnf files and self configure the phones with names and extension numbers. But when I look in the 3CX extension status screen the 7940 phones have a red icon next to them and also say un-registered. Can anyone please point me in the right direction please?