3Com VCX V7000, Maintenance Manual

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QoS Monitoring Statistics 43
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QoS Monitoring
Statistics
A call processor can also generate Quality of Service (QoS) statistics.
You can enable the collection of QoS statistics on a call processor to
objectively monitor voice quality in your VCX system.You can also use
QoS statistics to determine the effect of configuration changes and to
identify faulty end points or routes.
You can enable collection of QoS statistics and view the collected
statistics through the 3Com Enterprise Management Suite (EMS), version
2.3. QoS statistics also generate QDRs (Quality of Service Detail Records)
in XML format and stored on the Accounting server in the
/opt/3com/VCX/acctxml/qos directory. You can use a third-party
application to download the QDRs and create reports.
QoS monitoring, as implemented on a VCX system, covers 3Com IP
telephones (models 310x) as endpoints. The EMS administrator can:
■
Configure one or more monitored endpoints or subnets.
■
Configure thresholds for QoS statistics generation by the phones on
those monitored subnets.
■
Configure alarm thresholds for trap notifications based on QoS
parameters.
■
View generated statistics using SNMP.
The following QoS statistics can be recorded at the end of every call for
each leg of the call. These statistics are recorded in the call history table
on the Accounting server, and available through EMS.
■
Codec Sample Size
■
SIP Call ID
■
Codec Type
■
Device Type
■
Computed Mean Opinion Score