13810: Reject: Invalid causePositive FeedbackNegative FeedbackWARNING: 13810warning-13810 page anchorPositive FeedbackNegative FeedbackVOICEWARNING Descriptiondescription page anchorPositive FeedbackNegative FeedbackA call is rejected for any reason other than Busy or Hangup Possible causespossible-causes page anchorPositive FeedbackNegative FeedbackCould be timeout, cancelled, or no-answer. Possible solutionspossible-solutions page anchorPositive FeedbackNegative FeedbackCheck application call timeout duration.