AudioCodes Mediant 3000, User Manual

Page: 197 / 872

Version 6.6 197 Mediant 3000
User's Manual 13. Media
13.7.1 Configuring Quality of Experience per Media Realm
You can configure Quality of Experience (QoE) per Media Realm. This enables you to
monitor and analyze media and signaling traffic, allowing you to detect problems causing
service degradation. The device can save call information and statistics at call start, at call
end, or at specific changes in the call. The information is stored as call records on an
external server. The device connects, as a client, to the server using TLS over TCP.
You can specify the call parameters to monitor and configure their upper and lower
thresholds. If these thresholds are exceeded, the device can be configured to do the
following:

Reports the change in the monitored parameter to the monitoring server (default).

Sends RFC 2198 RTP redundancy packets on the call leg that crossed the threshold.
This enables the device to adapt to the changed network status. In this option, you
can also configure the redundancy depth. The channel configuration is unchanged if
the change requires channel reopening. Currently, this option is applicable only when
the monitored parameter is remote packet loss.
The device can be configured to monitor the following parameters on the local (i.e., at the
device) or remote side:

Packet loss

Mean Opinion Score (MOS)

Jitter

Packet delay

Residual Echo Return Loss (RERL)
At any given time during a call, each of these parameters can be in one of the following
states according to its value in the last RTCP / RTCP XR packet:

Gray - indicates that the value is unknown

Green - indicates good call quality

Yellow - indicates medium call quality

Red - indicates poor call quality
The mapping between the values of the parameters and the color is according to the
configured threshold of these parameters, per Media Realm. The call itself also has a state
(color), which is the worst-state color of all the monitored parameters. Each time a color of
a parameter changes, the device sends a report to the external server. A report is also sent
at the end of each call.
Notes:
•
The QoE feature is available only if the device is installed with the
relevant Software License Key.
•
To configure the address of the AudioCodes Session Experience
Manager (SEM) server to where the device reports the QoE, see
'Configuring SEM Server for Media Quality of Experience' on page
202 .
•
You can also configure QoE per Media Realm using the table ini file
parameter QOERules.

To configure QoE per Media Realm:
1. Open the Media Realm Table page ( Configuration tab > VoIP menu > Media
submenu > Media Realm Configuration ).
2. Select the Media Realm for which you want to configure Quality of Experience, and