[asterisk-users] Changing the messages that are played when a user is unavailable/busy

[Timothy Parez]

Hi,

I have my custom sounds which should be played instead of the default
ones when a user is busy or unavailable:

 "The person at extension XXX is not available right now, please...."

Of course I can simply replace the files, but the problem is my
implementation shouldn't (MUST NOT) mention the extension.

My files say something like

"The person you are trying to reach is not available right now.
 If you want to contact this person on his cellphone, press 1,
 if you want to leave a voice message, press 2 or wait."

As you can see the extension is not mentioned, so simply
replacing the files would probably cause something weird.

Where do I define what message are/aren't played in this case?

Thank you.