In our system we have the following problem, when a phone device is busy and a second incoming call will not hear a busy tone. Instead, the caller hears the normal "ringing" tone.
People complained that we don't answer their calls, when in fact we are busy on the phone, its just that the caller never gets a busy tone!
We'd like to choose one of these:
1) A second incoming call gets a busy tone
2) A second incoming call hears some music and a message like "you are on a priority queue".
How can we do the above two? Is it easy to switch from (1) to (2) if needed? What changes do we need to make to our trixbox configuration? (we are running the latest 2.4 version).
we use the IVR to play a recorded message to incoming calls ("hello, welcome to..") before directing the call to a single phone device used by the secretary.