server.mrcp1.rsspeechsynth.initialNumber
                                                    Specifies the number of synthesizer plug-in instances created during system initialization.
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                                                                     Value  | 
                                                                
                                                                     Integer: 0–number of available TTS licenses. DEFAULT: 0  | 
                                                            
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                                                                     How to set  | 
                                                                
                                                                     If using the Management Station, set on the Speech Server service. If not using Management Station, set in an NSS configuration file (user-NSSxx.txt).  | 
                                                            
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                                                                     Usage  | 
                                                                
                                                                     Rarely changed. Applicable for Nuance Recognizer. Not applicable for Dragon Voice recognition.  | 
                                                            
Supported for MRCPv1 browsers. (Ignored for MRCPv2 browsers.)