I attempted to upgrade a Cisco 7940 IP Phone IOS to version 8-12-00 the latest firmware. Before I upgraded I noticed that the copyright date on the phone was 2004 so the IOS had to have been 6X and noticed that On the screen it says ,"Protocol Applic...

I have setup my sip trunk and now would like to setup my Cisco 7940 ip phone using SIP and trixbox. I have reset the phone according to the instuctions from Cisco and it goes through the boot process and gets and IP address. On the screen it says ,"P...