AudioCodes 420HD - 45 Monitoring Quality of Experience; Configuring Remote Voice Quality Monitoring; Configuring RTCP Extended Report; Figure 45-1: Web Interface - Media Streaming - RTCP-XR

Administrator's Manual 45. Monitoring Quality of Experience
Version 2.2.8 249 400HD Series IP Phones
45 Monitoring Quality of Experience
You can configure the phone to send Quality of Experience reports to a QoE collecting
server, such as the AudioCodes SEM server. This mechanism is implemented using
RTCP-XR (RTCP Extended Reports). These extended reports include voice quality data
events, such as Jitter Buffer, Packet Loss, Delay and Burst, which are collected by the IP
phone during the VoIP session.
When the SIP PUBLISH feature is enabled, upon the termination of the VoIP session e.g. call
disconnect or Hold states, values are calculated for each voice quality data event and sent to
the QoE server in a SIP PUBLISH message.
RTCP XR information publishing is implemented on the IP Phone according to RFC 6035.
RTP Control Protocol Extended Reports (RTCP XR) is a VoIP management control that
defines a set of metrics containing information for assessing VoIP call quality and for
diagnosing problems. RTCP XR (RFC 3611) extends the RTCP reports defined in RFC 3550
by providing additional VoIP metrics for Quality of Experience.
45.1 Configuring Remote Voice Quality Monitoring
In order to report voice quality events from the phone to a Quality of Experience Server
(QoE), you must perform both of the following actions:

Configure the phone to retrieve RTCP XP events on voice quality data (see
Section 45.1.1).

Configure the phone to send SIP PUBLISH messages to the QoE server, including the
RTCP XP events described above and the SIP call messages (see
Section 45.1.2 45.1.2).
45.1.1 Configuring RTCP Extended Report
This section shows how to configure RTCP-XR (Extended Report for RTP Control Protocol)
working mode. You must enable the phone to retrieve RTCP-XR events using one of the
methods described in the table below (this feature is by default disabled).
 To configure RTCP_XR working mode using the Web interface:
1. Access the Media Streaming page (Configuration tab > Voice Over IP menu > Media
Streaming), and then scroll down to the RTCP-XR section.
Figure 45-1: Web Interface - Media Streaming - RTCP-XR
2. Configure the 'RTCP-XR Voice Quality Statistics Mode' parameter, using the following
table below as reference.