dtmf-term-timeout
                                                    Specifies the time to wait for optional termination character (dtmf-term-char) after collecting the correct number of tones allowed by the grammar.
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                                                                     Value  | 
                                                                
                                                                     Integer: 0–INT_MAX DEFAULT: VoiceXML: 0 (seconds) MRCP: 5000 (milliseconds)  | 
                                                            
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                                                                     How to set  | 
                                                                
                                                                     Shown in precedence order (see Rules of parameter precedence): In a VoiceXML application, using the termtimeout property (seconds) in a <property> element. In the browser, using the DTMF-Term-Char header in a RECOGNIZE method.SET-PARAMS, or GET-PARAMS method. In the application's session xml in the <speechrecog> section of <speechserver> under <sessionparameters>.  | 
                                                            
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                                                                     Usage  | 
                                                                
                                                                     Seldom used.  | 
                                                            
When the timer expires, the system acts as if the user entered the termination character.