I custom made one from the Cisco IP phones at my my father's office.
I adjusted the registry ring blank space delays so it repeats at the same rate as the real telephone. You have to import this script I made into the registry to get the correct delay
Code:
[HKEY_CURRENT_USER\ControlPanel\Sounds\RingTone0]
"Script"="av2pw2r"
"Sound"="\\Windows\\Rings\\Ring-Cisco IP.mp3"
"SavedSound"="\\Windows\\Rings\\Ring-Cisco IP.mp3"
"Category"="Ring"
[HKEY_CURRENT_USER\ControlPanel\Sounds\RingTone2]
"Script"="av2pw2r"
"Sound"="\\Windows\\Rings\\Ring-Cisco IP.mp3"
"Category"="Ring"
Enjoy!