I found a thread on the Net that tried to explain how to get a stream from LineIn for Music on Hold. This is exactly what I already did a while ago, while using Ast GUI. Now back to FreePBX, it seems that it misses something when configuring a streaming category (at least for LineIn capture): a directory assignment. Normally, one should have a name ([***]), a directory assignment (typically /var/lib/asterisk/mohmp3/) with at least a .mp3 file in it), and an application assignment (/usr/sbin/ast-playlinein, in this case). Without this directory assignment, how can Asterisk know where to get its mp3 file to play?
In my case, it doesn’t work.
Anyone has any experience with that?