i am trying to make an javascripot ivr  and collecting user input ,
but  during collection   session.collectInput( mycb, dtmf, timeout );
gets timeout and returns 



function mycb( session, type, obj, arg ) {
   try {
       if ( type == "dtmf" ) {
         console_log( "info", "digit: "+obj.digit+"\n" );
         if ( obj.digit == "#" ) {
           console_log( "info", "detected pound sign.\n" );
           exit = true;
           return( false );
         }
 
         dtmf.digits += obj.digit;
 
         if ( dtmf.digits.length >= digitmaxlength ) {
           exit = true;
           return( false );
         }
       }
   } catch (e) {
       console_log( "err", e+"\n" );
   }
   return( true );
} //end function collect_user_input




i want that timeout gets started countdown after last digit pressed
how to solve this  ?