A peek into the scorecard
Included in the Network Guide download is a powershell script
(CQM.ps1) that automates the execution and collection of the SQL queries
discussed in the Network Guide. When you point the scorecard at your
data, it will generate a bunch of views so you can get a handle on the
distribution of audio streams in your environment, which ones are
showing a high percentage of poor streams and how they are trending over
time. The scorecard view then presents all this in a summary table that
correlates with the ten elements of CQM just as you see in the CQM
poster. The areas are grouped by Red (Server Plant), Blue (Last Mile)
and Green (Endpoints). A final area is classified as Unmanaged at the
bottom which shows all external streams (media streams originating on
the internet and coming into Lync via Edge servers).
First we’ll talk about the supporting views and then the Scorecard view to determine how to make improvements.
The Stream Distribution view shows you the types of audio streams
used most in your environment, along with the proportion of those
streams that are poor.
The scorecard also breaks the poor streams out by type, so you can
see the top contributors. Here’s an example of a chart in Poor Stream
Distribution view:
You can also look at trends for each type of stream. The image below,
for example, shows a view of the trends for the Mediation to Gateway
stream.
These views show you where the hot spots are in your environment. The
Scorecard view shows you what you can do with these hot spots across
ten categories to improve your call quality.
The Scorecard view correlates with the ten elements of CQM and shown
visually in the CQM poster. The areas are grouped by Red (Server Plant),
Blue (Last Mile) and Green (Endpoints).
For example, here is the view of devices and their corresponding mean opinion scores (MOS) across an organization’s users:
You can customize the thresholds for each element in the scorecard.
If scorecard item is Red or Yellow, check the associated set of actions
suggested in the last column. In this devices example, you should look
in the TopIssues view to see the worst devices in your environment and
then check the results of the utility query tab
(Util_1_Users_Devices_Streams) to find all the users who have these
devices so you can work with them to troubleshoot and potentially
replace them.
In addition to listing the worst performing devices, the TopIssues
view lists the top 10 problem areas across each of the remaining CQM
categories. For example, here is a list of the top ten issues for an
organization’s Mediation to Gateway streams:
Top 10 PoorStreamsRatio issues for Plant_2_Mediation_Gateway where AllStreams > 50
In this example, you can see the 10.98.6.58 gateway is the common
element across all of the Mediation Servers. Your next step here is to
take a closer look at the gateway configuration and the network devices
in common between the mediation servers and this gateway to figure out
what could be causing the high percentage of poor streams.
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