Default Value: false
Enables the behavior "termchar Empty When Grammar Must Terminate" described in VoiceXML 2.0 Specification - Appendix D. An immediate timeout on dtmf collection for grammars builtin:digits (with length or maxlength set) or builtin:boolean grammars. If any other grammars are active during recognition this behavior is disabled.
<?xml version="1.0"?> <vxml version="2.0"> <property name="termmaxdigits" value="true"/> <property name="interdigittimeout" value="3s"/> <form> <field name="myfield" type="digits?length=5"> <prompt> Enter up to five ones or twos. </prompt> <filled> <prompt bargein="false"> You entered <value expr="myfield"/>. </prompt> </filled> <nomatch> You did not enter enough ones or twos. <reprompt/> </nomatch> <noinput> You did not enter anything. <reprompt/> </noinput> </field> </form> </vxml>
From this example, by setting "termmaxdigits" to true, we can allow for no timeout as soon as the user has matched the maximum number of digits. If the user enters 5 numbers, the behavior of the application immediately returns a response to the user. If the user entered less than 5 numbers of ones or twos, the application waits for 3 seconds from the "interdigittimeout" property and returns a <nomatch> after 3 seconds has passed with nothing inputted. If the user entered more than 5 numbers, the application returns just the first 5 digits that were entered by the user.