Current: Release Notes PDF Download PDF Download page Release Notes. Current page Include child pages All pages Release Notes This page contains the preliminary information that is intended to prepare you to use the U19 version of LiveVox. You must include the Content-Type header field in all requests to the REST API in LV19 and later versions. To know more about LV19 release, click the below sections: Compliance API Configuration APIs Contact API Real-Time Reporting API SMS API ×