product_version
                                                    Returns the current product version string, such as "5.5.0".
| 
                                                                     Value  | 
                                                                
                                                                     Version string of the Vocalizer installation.  | 
                                                            
| 
                                                                     Default  | 
                                                                
                                                                     Current product version.  | 
                                                            
| 
                                                                     How to get  | 
                                                                
                                                                     Voice browser—Get as switts.product_version with MRCP.  | 
                                                            
| 
                                                                     Use  | 
                                                                
                                                                     Seldom used.  | 
                                                            
Read-only.