* [[http://www.cisco.com/en/US/docs/voice_ip_comm/cuipph/7906g_7911g/7_0/english/administration/guide/11prep.html]]
  * [[http://www.voip-info.org/wiki/view/Asterisk+phone+cisco+7970+SIP]]
  * [[http://www.voip-info.org/wiki/view/Asterisk+phone+cisco+79x1+xml+configuration+files+for+SIP]]
  * [[http://forums.whirlpool.net.au/archive/1413737]]
  * http://www.pbxinaflash.com/community/index.php?threads/cisco-7911g-from-no-firmware-to-sip.8448/

  for i in *
  do
    rm /tmp/tftpd-hpa/$i
    cp /tmp/tftpd-hpa/sccp/$i /tmp/tftpd-hpa/$i
  done
  
  tcpdump -ni eth0 -v -T tftp 'udp'