Microsoft call records api - https://learn.microsoft.com/en-us/graph/api/callrecords-callrecord-get?view=graph-rest-1.0&tabs=http returns field values with prefix PT and suffix S. Does it mean point and Seconds ?
eg. "averageRoundTripTime": "PT0.005S" or "maxJitter": "PT0.02S" , what PT and S denotes ?