[Freeswitch-users] Changing voicemail greeting to pronounce (instead of spelling out) id/number

Hi! I am using actual names of users instead of numbers (numbers are so POTS), but there doesn't seem to be a way to change the way the voicemail user id is announced - I know you can use vm-alternate-greet-id to change the ID, but if it is not numerical, it gets spelled out letter by letter instead of pronounced. Is there any way to change this behavior without changing the source code? Julf