[Freeswitch-users] Change sound someone hears when they ring me

Hi, I've set a freeswitch box with bluebox (with a bit of hassle! but it got there). I can't find where to start looking regarding changing the sound an external person hears when they call me. usually from the standard landline when dialing a number I get a ring-ring ring-ring, but when someone dials my number (which is a voip DID) it has a long riiiiiiiiinnnnngggggg . . . . . riiiiiiiiinngggggg. Is there any way I can change that? My asterisk box and other voip phones haven't done it, so I figure it must be able to be changed. Thanks, Ryan