Polycom SIP 3.0.2 ユーザーズマニュアル

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 Configuring Your System
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The RTCP XR packets are complaint with RFC 3611 - RTP Control Extended 
Reports (RTCP XR). 
The packets are sent to a report collector as specified in 
draft RFC draft-ietf_sipping_rtcp-summary-02. 
Three types of quality reports can be enabled:
• Alert—Generated when the call quality degrades below a configurable 
threshold.
• Periodic—Generated during a call at a configurable period.
• Session—Generated at the end of a call.
A wide range of performance metrics are generated. Some are based on 
current values, such as jitter buffer nominal delay and round trip delay, while 
others cover the time period from the beginning of the call until the report is 
sent, such as network packet loss. Some metrics are computed using other 
metrics as input, such as listening Mean Opinion Score (MOS), conversational 
MOS, listening R-factor, and conversational R-factor. 
Configuration changes can performed centrally at the boot server:
Setting Up Security Features
This section provides information for making configuration changes for the 
following security-related features:
Local User and Administrator Privilege Levels
Several local settings menus are protected with two privilege levels, user and 
administrator, each with its own password. The phone will prompt for either 
the user or administrator password before granting access to the various menu 
options. When the user password is requested, the administrator password 
will also work. The web server is protected by the administrator password 
 on page 
).
Central 
(boot server)
Configuration file: 
sip.cfg
Specify the location of the central report collector, how often the 
reports are generated, and the warning and critical threshold values 
that will cause generation of alert reports.
For more information, refer to 
 on page