audioinsertervolumeadjust
                                                    Enables volume adjustment when playing prerecorded audio files (for example, files inserted into a prompt via the <audio> SSML tag).
| 
                                                                     Value  | 
                                                                
                                                                     Boolean.  | 
                                                            
| 
                                                                     Default  | 
                                                                
                                                                     false  | 
                                                            
| 
                                                                     How to set  | 
                                                                
                                                                     
                                                                          | 
                                                            
| 
                                                                     Usage  | 
                                                                
                                                                     Seldom used.  | 
                                                            
When true, the volume for inserted audio files can be adjusted using normal controls: for example, by setting volume in a <prosody> tag or configuration file.