[Asterisk-Users] Sound files for internal functions in another place??

[Dan]

Hi,

Which is the default directory for the sound files used by the internal
Asterisk functions, like Voicemail?
There is another sound files directory at:
/usr/src/asterisk/sounds

As I know, the default for user defined prompts is:
/var/lib/asterisk/sounds

Which is the recommended procedure to change the default prompts?

Thanks,
Dan