Converting Cisco 7912 to SIP

Converting 7940/7960 to SIP is a walk in the park compared to converting a 7912. In order to convert the phone I had to:

  • Point the phone to my tftp server and allow it to download the correct firmware. I used cp7912080000sip060111a
  • Then I found and edited the "sipexample.txt" file that came with the firmware to work with my SIP setup
  • Then I tried to run cfgfmt.exe on "sipexample.txt" but it told me that it could not find ptag.dat so I had to rename the file "sip_ptag.dat" that came with the firmware to ptag.dat for the tool to convert the text file into a binary file.
  • Finally i placed the binary file named gkMAC_ADDRESS in root of the tftp server and restarted the phone. My tftp server already had a binary copy of gkdefault.txt on it or otherwise I would have had to convert that file to binary with the tool and place it on the tftp server as well


Unknown said...

hello.. could help me by sending the example files?

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