Call progress diagnostics (tracking log of caller keypresses)

Our prior system (8x8) had a wonderful diagnostic tool whereby any inbound call could be tracked in a timeline showing every keypress the caller made, along with durations between keypresses and duration of whatever state they were in (for example, how long on hold). This timeline shows every scrap of data for the entire call from inbound ring to hang up. I have had to use this feature many times to address caller complaints of system functionality and more often than not, this was my only evidence to show the caller had misused the system or chose incorrect or inactive buttons.