Convert Cisco Phone 7912 SIP to SCCP firmware

Download fw from

Follow this step
-extract cfgfmt.exe, gkdefault.txt and sip_ptag.dat, and put into tftp-root
-copy CP7912080004SCCP080108A.sbin into tftp-root
-edit gkdefault.txt
change this part
-from cmd run
> cfgfmt -tsip_ptag.dat gkdefault.txt gkdefault.cfg

from the router copy CP7912080004SCCP080108A.sbin and gkdefault.cfg into flash
# copy tftp:gkdefault.cfg flash:
# copy tftp:CP7912080004SCCP080108A.sbin flash:

off/on 7912


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