{"id":243,"date":"2010-12-16T13:27:05","date_gmt":"2010-12-16T18:27:05","guid":{"rendered":"http:\/\/peshvar.com\/myblog\/?p=243"},"modified":"2011-06-23T15:26:30","modified_gmt":"2011-06-23T20:26:30","slug":"cisco-79407960-protocol-application-invalid","status":"publish","type":"post","link":"https:\/\/peshvar.com\/myblog\/2010\/12\/16\/cisco-79407960-protocol-application-invalid\/","title":{"rendered":"Cisco 7940\/7960 Protocol Application Invalid"},"content":{"rendered":"<p>The easiest way to fix this is to setup Windows DHCP or Linux DHCP and pass TFTP IP address from your DHCP Server.<\/p>\n<p>I fixed my issue by setting up DHCP in Windows 2003, then as per Cisco recommendation, I added the option 150 to the DHCP, check this link: http:\/\/www.cisco.com\/en\/US\/products\/sw\/voicesw\/ps556\/products_tech_note09186a008055c1fe.shtml<\/p>\n<p>There is another step, in Windows 2003, after you add the Predefined option, you need to go &#8220;Scope Option&#8221; and enable &#8220;150 TFTP Server IP&#8230;&#8221;<\/p>\n<p>Reboot the phone, the phone should now connect to your TFTP server and download the recent firmware&#8230;<\/p>\n<p>[ad#co-1]<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The easiest way to fix this is to setup Windows DHCP or Linux DHCP and pass TFTP IP address from 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