Enabling performance metric events

Optional. These call log events provide useful metrics about application performance:

Event name

Value

nvp_metric.caller-perceived-latency

Milliseconds between the end of the caller’s input and the start of the next prompt. See Enabling performance metric events.

nvp_metric.time-to-first-prompt

Milliseconds between the start of the call (answered) and the first prompt. See Enabling performance metric events.

To enable these events in the logs:

  1. Edit the %NSSSVRSDK%\config\NSSserver.cfg file on the Nuance Speech Server host.
  2. Un-comment the following property:

    #server.mrcp2.rsspeechsynth.speechMarkerName VXIString Nuance

  3. Restart the Speech Server service.