language_identifier_mode
                                                    Mode for automatic language identifiication during the session.
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                                                                     Value  | 
                                                                
                                                                    
  | 
                                                            
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                                                                     How to set  | 
                                                                
                                                                     
                                                                         Set in a VoiceXML application, using the switts.language_identifier_mode property in a <property> element. Set in the voice browser, with as switts.language_identifier_mode using the Vendor-Specific-Parameters header in a SPEAK method. Set in the session xml file for the application. Configure the <speechsynth> element located under <sessionparameters>, <speechserver>.  | 
                                                            
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                                                                     Usage  | 
                                                                
                                                                     Seldom used (because the default is usually satisfactory).  | 
                                                            
Related properties:
For more, see Vocalizer languages and voices.