Silent calls can be very annoying to the potential respondent and are typically heavily regulated. Therefore the details of silent call handling are important. Many regulators require that a message be played to the respondent if the call cannot be connected. The Interviewing Options' Dialer Settings tab supports a project specific silent call message. If your dialer does not support a project specific silent call message, or does not support passing this method in from the interviewing server, this information should be covered in your supplemental documentation.

The default sample management script used by most clients moves records returned with the Silent return code to a SILENT queue. These records are not available for recall until the supervisor manually moves them to the RECALL or APPOINTMENT queue. The script also sets a RecallTime and AppointmentTime based on the silent appointment delay defined on Phone Settings' Parameters tab.