Busy( ) | Indicates a busy condition to the channel |
Busy([ timeout ])
Requests that the channel indicate the busy condition and then waits for the user to hang up or for the optional timeout (in seconds) to expire.
This application only signals a busy condition to the bridged channel. Each particular channel type has its own way of communicating the busy condition to the caller. You can use Playtones(busy) to play a busy tone to the caller.
Always returns -1 .
exten => 123,1,Playback(im-sorry) exten => 123,2,Playtones(busy) exten => 123,3,Busy( )
Congestion( ) , Progress( ) , Playtones( )