Convert Cisco Phone 7912 SIP to SCCP firmware

Download fw from
http://www.firewall.cx/downloads/cat_view/167-cisco-tools-a-applications/189-cisco-ip-phone-a-ata-firmware-downloads.html

Follow this step
http://blog.hamzahkhan.com/2010/02/05/cisco-unified-ip-phone-7912g-sip-to-sccp/
-download
-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
upgradecode:3,0×601,0x0400,0x0100,0.0.0.0,69,0x080108a,CP7912080004SCCP080108A.sbin
-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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