Call Detail Report

Topic Last Modified: 2014-02-05

The Call Detail Report provides a detailed look at an individual call; the report includes nearly all the Quality of Experience metrics and statistics collected by Lync Server, divided into report sections such as:

Call Information
Caller Device and Signal Metrics
Callee Device and Signal metrics
Caller Client Event
Callee Client Event
Audio Stream (Caller to Callee)
Video Stream (Caller to Callee)
Audio Stream (Callee to Caller)
Video Stream (Callee to Caller)

Keep in mind that the categories and the metrics you see on a given report depend on two things: the type of session and the type of endpoints used in the session. For example, an audio-only call will not report metrics for video streams; that's because the call didn't have a video stream. Likewise, you might have a report that lists caller statistics but not callee statistics. That's typically because the callee was not using a SIP-compliant device. Endpoints are responsible for reporting statistics at the end of a call; however, a cell phone (which knows nothing about SIP or SIP statistics) is unable to report that kind of information. If you call someone and they answer you on their cell phone, you will not get a report from that cell phone when the call ends.

The Call Detail Report is most useful when you are trying to determine exactly why a given call experienced media quality problems.

Accessing the Call Detail Report

The Call Detail Report can be accessed from any of the following reports:

The Location Report (by clicking either the Call volume or the Poor call percentage metric)
The Media Quality Summary Report (by clicking either the Call volume or Poor call percentage metric)
The Media Quality Comparison Report (by clicking the Call List Report and then clicking the Detail metric).
The Server Performance Report (by clicking either the Call volume or Poor call percentage metric)
The Call List Report (by clicking the Detail metric)

From within the Call Detail Report you can access the Device Report by clicking either of the following metrics:

Capture device
Render device

You can also access the Server Media Quality Trend Report by clicking the A/V edge server metric.

Making the Best Use of the Call Detail Report

The Call Detail Report typically includes over 250 different metrics, including such items as Microphone timestamp drift, Low SNR time, and Near end to echo time. If you can't remember what all of these metrics actually measure, try holding your mouse over the metric label; often-times, a tooltip will appear describing that metric.

If you have problems locating a metric, type part of the metric label in the search box and then click Find. For example, if you can't find the Low SNR time metric, type SNR in the search box and then click Find.

Note that the report only tracks information about a call. The call itself is not recorded.

Filters

None. You cannot filter the Call Detail Report.

Metrics

The following table lists the information provided in the Call Detail Report for each call.

Call Detail Report Metrics

Name	Can you sort on this item?	Description
Caller PAI	No	P-Asserted-Identity of the user who initiated the call. The P-Asserted-Identity is used to convey the proven identity of a user within a trusted network.
Caller URI	No	SIP address of the user who initiated the call.
Caller endpoint	No	Device used to make the call.
Caller user agent	No	Software used on the device that made the call.
Call start	No	Date and time that the call was initially placed.
Mediation Server bypass call	No	Indicates whether the call connected to a PSTN voice gateway or qualified IP-PBX without passing through the Mediation Server.
Caller OS	No	Operating system of the caller's computer.
Caller CPU	No	CPU installed in the computer of the user who initiated the call.
Caller CPU core number	No	Processor number in the computer used by the person who initiated the call.
Caller CPU speed	No	Clock speed of the CPU of the computer used by the person who initiated the call.
Caller CPU virtualization	No	Virtualization (if any) used on the computer used by the person who initiated the call.
Callee PAI	No	P-Asserted-Identity of the user who was invited to join the call. The P-Asserted-Identity is used to convey the proven identity of a user within a trusted network.
Callee URI	No	SIP address of the user who was called.
Callee endpoint	No	Device used to receive the call.
Callee user agent	No	Software used on the device that received the call.
Duration	No	Length of time for the call.
Media bypass warning flag	No	Warning issued when the Mediation Server was bypassed.
Callee OS	No	Operating system of the computer for the user who was called.
Callee CPU	No	CPU installed in the computer of the user who was called.
Callee core number	No	Processor number in the computer used by the person who was called.
Callee CPU speed	No	Clock speed of the CPU of the computer used by the person who was called.
Callee CPU virtualization	No	Virtualization (if any) used on the computer used by the person who was called.